Federal Criminal Motions: Statute and Case-Law Update

How to Use This Page

This page is a running digest for the federal criminal-motions compendium. It collects new appellate decisions and subtle statutory or rule changes that affect the pretrial and trial motions covered here, from suppression and Franks hearings to Rule 29 acquittal and double jeopardy practice.

It is organized around the same motions the compendium already explains, so each update below links back to the underlying motion page. The goal is not to reargue settled law but to flag where an appellate court has sharpened a standard, where a rule amendment has changed a deadline or disclosure duty, and where a preservation trap now bites harder.

This digest is reviewed and refreshed periodically, and it was last reviewed in July 2026. Federal rules are amended on a December 1 cycle, and appellate law can move between reviews. Treat every entry as a starting point: confirm the current text of any rule or statute against the primary source, and check that a case remains good law before relying on it in a filing. Nothing here is legal advice or a substitute for independent research and a licensed attorney's judgment on a specific matter.

Where an item affects more than one motion, it is cross-listed. Citations use standard reporters, and effective dates follow the federal rules cycle.

Recent Rule and Statutory Changes

The Federal Rules of Criminal Procedure and Evidence are amended each December 1 unless Congress intervenes. Several recent amendments change what must be disclosed, when, and how a court screens expert proof. The crosswalk below lists the amendments most relevant to the covered motions, each checked against the current rule text.

Effective dates follow the December 1 rules cycle and were confirmed against the current rule text. The Speedy Trial Act (18 U.S.C. Section 3161) and Title III (18 U.S.C. Section 2518) have not seen comparable recent amendments, but the case law interpreting them keeps moving, as noted below.

New and Notable Decisions

Each entry states the holding with a pin cite, names the subtle shift in how the issue is litigated, and links to the motion it most affects. It is a summary for orientation, not a substitute for reading the opinion and confirming it remains good law in the governing circuit.

Suppression of physical evidence and Fourth Amendment standing

Carpenter v. United States, 585 U.S. 296 (2018). The government's acquisition of historical cell-site location records from a wireless carrier is a Fourth Amendment search that generally requires a warrant, and the Court declined to extend the third-party doctrine to that data. Id. at 316. Subtle shift: data a person shares with a company is no longer automatically outside Fourth Amendment protection, which reopens suppression arguments over digital location, and courts continue to test how far the reasoning reaches. It feeds directly into a motion to suppress physical evidence.

Lange v. California, 594 U.S. 295 (2021). Pursuit of a fleeing misdemeanor suspect does not categorically justify a warrantless entry into a home; the exigent-circumstances exception calls for a case-by-case look at the totality of the circumstances. Id. at 301. Subtle shift: what used to be argued as an automatic hot-pursuit exception is now a fact contest over whether a genuine now-or-never emergency existed, giving the defense a live suppression issue at the threshold of the home. See the physical-evidence suppression page.

Byrd v. United States, 138 S. Ct. 1518 (2018). A driver in otherwise lawful possession and control of a rental car keeps a reasonable expectation of privacy even if not listed as an authorized driver on the rental agreement. Subtle shift: a rental-contract breach, standing alone, no longer defeats standing, so the government cannot short-circuit a suppression motion by pointing to the paperwork; the fight moves to whether possession was otherwise lawful. This is a Fourth Amendment standing question.

Suppression of statements

Vega v. Tekoh, 597 U.S. 134 (2022). A Miranda violation is a breach of a prophylactic rule, not itself a violation of the Fifth Amendment, and the use of an un-Mirandized statement does not support a civil-rights damages claim. Subtle shift: the decision recharacterizes Miranda's status. In the suppression setting the warnings rule still governs admissibility, but counsel should anchor a motion to suppress a statement in actual custody, interrogation, invocation, and voluntariness, rather than treating the bare warning defect as a stand-alone constitutional violation.

Wiretap and Title III

Dahda v. United States, 138 S. Ct. 1491 (2018). Suppression under 18 U.S.C. Section 2518(10)(a)(ii) does not require a defect that implicates the statute's core concerns; an order is attacked when it is insufficient on its face. But a legally ineffective surplus sentence, here language purporting to authorize interception outside the district, did not make the order facially insufficient. Id. at 1498. Subtle shift: it confirms a broader facial-insufficiency path while foreclosing suppression for harmless surplus language, sharpening how a wiretap suppression motion should be framed.

Severance and the Confrontation Clause

Samia v. United States, 143 S. Ct. 2004 (2023). The Confrontation Clause is not violated when a non-testifying codefendant's confession is altered to replace the defendant's name with a neutral placeholder and the jury receives a proper limiting instruction. Subtle shift: it narrows Bruton and rejects flyspecking the record for collateral inferences, so a placeholder redaction plus an instruction can now defeat a motion to sever even where the jury might infer the reference is to the defendant. The line now turns on the form of the redaction.

Expert and forensic testimony

Smith v. Arizona, 602 U.S. 779 (2024). When a testifying expert conveys an absent analyst's factual assertions to support the expert's own opinion, those basis statements come in for their truth and, if testimonial, implicate the Confrontation Clause. Subtle shift: it closes the Rule 703 not-for-its-truth workaround that let a surrogate analyst relay another lab's results. This reshapes both a Daubert motion and confrontation objections at a James hearing or trial, and it dovetails with the strengthened Rule 702.

Return of property and forfeiture timing

Culley v. Marshall, 144 S. Ct. 1142 (2024). In civil forfeiture of personal property, due process requires a timely forfeiture hearing but not a separate preliminary retention hearing; timeliness is measured by the Barker v. Wingo speedy-trial factors. Subtle shift: owners get no early adversarial hearing to recover seized property, so pressure shifts to litigating delay under Barker and to a Rule 41(g) motion for return of property where a criminal case is pending.

Double jeopardy

Gamble v. United States, 587 U.S. 678 (2019). The Court reaffirmed the dual-sovereignty doctrine: an act that violates both federal and state law is two distinct offenses, so successive federal and state prosecutions do not offend the Double Jeopardy Clause. Subtle shift: a defendant cannot base a double jeopardy motion on a prior prosecution by a different sovereign; the analysis returns to same-elements and same-sovereign questions rather than the cross-sovereign overlap.

Subtle Shifts Worth Knowing

Some of the most consequential movement is not a headline holding but a quiet change in how an issue is reviewed, preserved, or timed. These traps decide motions as often as the merits do.

Preservation and plain-error traps

Under Federal Rule of Criminal Procedure 12(b)(3), suppression, defects in the indictment, and several other defenses must be raised before trial. If the court's deadline passes without a motion or an extension, the issue is generally forfeited, and a reviewing court will consider it only for good cause. A motion that is filed but never pressed to a ruling can be treated as abandoned. Counsel should calendar the Rule 12 deadline, put every ground in writing, and secure an on-the-record ruling to keep the issue alive for a Rule 29 or appellate posture.

Standard-of-review nuance

The 2023 amendment to Federal Rule of Evidence 702 was drafted in part because many courts had drifted into admitting shaky expert proof and calling the weakness a matter of weight for the jury. The amended text restores the trial court's gatekeeping role and states the proponent's burden as more likely than not. A record that pins the court to that burden preserves a stronger argument on review of a Daubert challenge. Likewise, after Smith v. Arizona, a general hearsay objection may not preserve a Confrontation Clause claim, so state the constitutional ground expressly.

Timing under the Speedy Trial Act

The Speedy Trial Act (18 U.S.C. Section 3161) sets a 30-day arrest-to-indictment clock and a 70-day indictment-to-trial clock, but Section 3161(h) excludes broad categories of delay, including pretrial-motion delay and ends-of-justice continuances supported by on-the-record findings. Two points recur: an ends-of-justice continuance requires findings that exist at the time, not a later reconstruction, and the remedy on a granted Speedy Trial Act motion can be dismissal with or without prejudice. A motion to continue should build the ends-of-justice record deliberately, because a defective finding can later reopen the clock.

Motion Deadlines at a Glance

Federal motions live or die on timing. The deadlines below come from the current Federal Rules; confirm the exact date the court sets in your case, because a judge can shorten or extend several of them by order.

Missing one of these deadlines can forfeit an otherwise strong argument, so calendar them at the outset and confirm the current rule text before filing.

What This Means for Motion Practice

Read together, the recent decisions and amendments push federal motion practice toward earlier, more detailed, and more precisely preserved filings. A few practical themes stand out.

• Front-load discovery and expert disputes. Rule 16.1's conference and the rewritten Rule 16 expert-disclosure duty mean gaps in the government's expert notice can be surfaced and litigated well before trial, and can support a motion to exclude or a continuance.
• Treat forensic proof as a confrontation problem, not just a reliability problem. Smith v. Arizona and amended Rule 702 together give the defense two distinct levers against a surrogate analyst: the gatekeeping standard and the right to confront the person who did the testing.
• Mind the form of a redaction. After Samia, whether a codefendant's altered statement is admissible can turn on the exact words used to stand in for a name, which makes the severance record and the limiting instruction worth fighting over.
• Anchor suppression in the right doctrine. Vega counsels framing statement suppression around custody, interrogation, and voluntariness, while Lange and Byrd keep the home-entry and standing questions open on the facts.

None of this changes the core purpose of a pretrial motion: to test the government's evidence and narrow the case before a jury is seated. It does change the sequence and the paper trail. A defendant deciding whether a motion fits a specific case should speak with a licensed attorney, and outcomes always depend on the individual facts and the governing law in the district.

General Information and Currency Note

This digest is general legal information about federal criminal procedure. It is not legal advice, and it does not create an attorney-client relationship. Federal statutes, the Federal Rules of Criminal Procedure and Evidence, and the decisions of the Supreme Court and the Fifth Circuit change over time, and a summary can lag the source.

Before relying on any item here, confirm the current text of the rule or statute through the primary sources listed with this page, and verify that a cited case remains good law. The firm reviews this page periodically, and it was last reviewed in July 2026. If you are facing charges in the Northern or Eastern District of Texas or elsewhere, consult a licensed attorney about how the current law applies to your situation.

L and L Law Group, PLLC, is a Frisco, Texas criminal-defense firm. You can reach the office at (972) 370-5060 or info@landllawgroup.com, at 5899 Preston Rd, Suite 101, Frisco, TX 75034. Co-founding partners Reggie London (Texas Bar 24043514; admitted in the Northern and Eastern Districts of Texas and the Fifth Circuit) and Njeri London (Texas Bar 24043266) handle federal and state criminal matters.

New & Notable Decisions at a Glance

Recent and still-controlling decisions that shape how these motions are litigated—each verified against the published opinion. Holdings are general summaries, not predictions about any case.