This legislation aims to prohibit no-knock warrants by requiring law enforcement officers to provide notice of their authority and purpose before executing a warrant and forcibly entering a premises. It establishes a clear mandate for federal agencies and incentivizes state and local compliance. Specifically, the bill prohibits Federal law enforcement officers from executing any warrant without first providing notice of their authority and purpose. Additionally, it conditions the receipt of Department of Justice funds for State and local law enforcement agencies on their adoption of similar policies. This means agencies receiving federal funding must ensure their officers announce their presence before forcible entry, effectively promoting a nationwide ban on no-knock warrants.