Who cares if Trump is an "international laughing stock"? The E.U. is dying.
It seems like you're under the impression that American's were ever the most refined or intelligent people in the Western world, or that Europeans once viewed us that way. That's false. We've never been. Those would probably be the Germans or some Nordic country.
The impolite, unrefined, dumb American stereotype has been around for centuries and like all stereotypes it has some basis in truth. American exceptionalism is based on the fact that we work harder, we have a larger appetite for risk, and we're fiercely independent compared to our more collectivist European allies. Independence, high risk appetite, and hard work is the basis of the entrepreneurship that built the wealthiest society that the world has ever seen.
So if you want to judge others or feel embarrassed because American's and our political leadership don't meet some perceived standards of polite society, by all means, move to Europe and embrace the collectivist malaise that leads to dying cultures and dying economies.