They probably just want to take advantage of old laws and/or not precise enough that allows them to search everything (according to their interpretation, includ

They probably just want to take advantage of old laws and/or not precise enough that allows them to search everything (according to their interpretation, including virtual things) on anybody -- without even any probable cause. Most government can't do that (in theory...) when you are a citizen or maybe even just a resident, except when you cross the border. So if they want to watch you politically, they do that (at least) at the border.