Sometime this spring, the Supreme Court will hand down its decision in the case of Hudson v. Michigan. At issue is whether or not police who used an illegal "no-knock" raid to enter a defendant's home can use the drugs they seized inside against the defendant at trial. To understand the importance of this case, some background is in order. As the name indicates, a "no-knock" raid occurs when police forcibly enter a private residence without first knocking and announcing that they're the police. The tactic is appropriate in a few limited situations, such as when hostages or fugitives are...