My Apologies:
Radley's latest post makes clear that my earlier post badly misunderstood his position. My apologies. In its Fourth Amendment cases, the Supreme Court routinely refers to "invasion" of a home to mean any physical access, and I assumed Radley was using the word in the way the Supreme Court does, not to refer only to no-knock paramilitary raids. Radley seems to think my misunderstanding was in bad faith; it wasn't. In any event, I regret the misunderstanding.