So, you are saying that SWAT can enter ANY home just to get their target?
No. They can enter with sufficient reason to believe the suspect is present, and with exigent circumstances, for the purpose of arresting the suspect only (no other search).
Their sole purpose of entering this home was arrest this target.
That can be the ONLY legitimate purpose for entering any home with only an arrest warrant.
A target that they could of easily picked up on the street.
Believe me, a wanted suspect can quickly disappear on the street, or can become a danger to others as he tries to escape.
They entered a home, that did not belong to target, nor was target permanently living there.
The suspect has no more expectation of privacy in the home of a third party than he does in his own home. If he was even temporarily staying there then that boosts the reason to believe he may be found there, but the length of his stay does not matter so long as the police had valid information that he was present at the time.
This was not a public place and target was being investigated and watched on a daily basis. Depositions state that investigators knew his every move.
This is more information that tells us the police had solid information that he was inside the house at the time they entered to make the arrest.
It is more than obvious that the raid was carried out in hopes that a search would result in the finding of illegal drugs or weapons.
That is very possible, and kudos to them if they planned it that way. Remember that they can't search the house for contraband without a warrant... only what is in plain view. However, they may search the immediate area where the suspect was arrested.
My question still lies on what is the legalities of entering a home that is not certain to be that of the target. It seems by what you explained, target could have gone anywhere, visited anywhere or anyone, and the police have authority the enter someone else's home with SWAT to carry out an arrest warrant. This just doesn't seem right.
I think there is some information we are missing here. The police probably either considered him to be dangerous or a potential flight risk. If the guy had been on the move then they may not have had time to get a formal warrant, which can take hours. If they felt they had exigent circumstances, then they were okay to make entry. However, you said that it wasn't his "permanent" residence, which leads me to believe it was at least a temporary residence. The address on the warrant really does not matter. With sufficient reason to believe he was there, they were good to make their move. And again, it sounds like they correctly followed up with a search warrant for the house.
It is very possible that a judge won't like how this all went down and everything aside from the arrest of the warrant suspect could get tossed... however if the police provide a good enough argument that explains the reasonableness of their actions, exigency, plain view observations, and a subsequent search warrant, then it could well stand up too.