Sorry bro, but that is absolutely, false. No one can enter and search your home without a warrant unless you let them, or they have evidence.
They want you to think that, and most people grant them permission.
I have multiple CLOSE friends, that are wardens in 3 states. They go through absolute hell all the time to get a judge to sign off on warrants (as it should be)
There are some exceptions when it comes to a few things, eagles, Lacey act. But dude they can’t just knock on your door and search your home for fun