Most US spying programs violate the 4th amendment. And have been ruled Constitutional as long as the targets are not US citizens. And if you want to seize someone's assets, you just sue the assets. The owner has been ruled to not have standing to object. See https://en.wikipedia.org/wiki/Asset_forfeiture for more.
Despite our law enforcement and government swearing to uphold the Constitution, it seems to be more useful as toilet paper sometimes.
No. The USA's constitution does not apply to people outside the USA. I don't know what kind of ideological bubble you need to live in to think that your country's laws are applicable to the entire planet, but I assure you they're not.
