The issue is that the US law enforcement should use a foreign legal system to request legal assistance if they want to do a search in a foreign country, which would allow affected parties to use the local court system to defend themselves.

How would you (assuming you're american) feel if the english police entered your corporate office to seize documents and told you if you had issues you would have to deal with it in england?

That's how everyone else feels about the US thinking they have jurisdiction over their documents stored on some 3rd party providers which - under local laws - have obligations to maintain the customer's privacy.