Absolute and total BRAVO SIERRA.
If they have a warrant and are following constitutional law, not trampling unalienable rights, then they can enter...if they do not, then they can expect to be treated as the criminals that they would then be.
End of story...full story.
Otherwise...Lexington Green and Concord come to mind.
He was no longer a tenant ~ and had, in fact, told the cop he didn't live there.
So why is a warrant needed in this case?
Think hard. We'll give you all day to come up with some reason.
The decision is, of course, wrongly decided, but the 4th amendment hasn't got a thing to do with it.
This is pure, murderous evil. It sets a precedent; it is a tool that will be used elsewhere and in another manner.