This legislation establishes a comprehensive prohibition on no-knock warrants across various law enforcement levels. It explicitly states that Federal law enforcement officers may not execute any warrant until they have provided clear notice of their authority and purpose. To extend this prohibition, the bill also impacts State and local law enforcement agencies that receive funding from the Department of Justice. These agencies, starting in the fiscal year after enactment, will be barred from executing warrants that do not require officers to provide notice of their authority and purpose before forcibly entering a premises. This mechanism ensures that federal funding is contingent upon adherence to the no-knock warrant ban.