It's manifestly false that "it would not permit searches or seizures that are not already legal." Currently if all I have is a warrant issued in Venue A then it

It's manifestly false that "it would not permit searches or seizures that are not already legal." Currently if all I have is a warrant issued in Venue A then it is illegal for me to do a search in Venue B on the basis of that warrant. But after the change under some circumstances, the Venue A warrant makes it legal for me to do a search in Venue B. Thus searches that were illegal are now legal. Otherwise why bother making any change?