Oh, no. Most airports are more secure. I have been through German airports, Russian, English, Italian, and American. The foreign airports were much more secure and serious. I think Russia was the most focus on security. When you come off a Russian plane you are filtered to a person In a plexiglass cage with a computer. They look at you, look at the computer, and stamp your passport. The Germans have 2 secure parts to their airport. There is the first part where they ask for papers, and check bags and the holding area. When you are ready to board they put you on a tram with security and to a second holding area. At this point you are at the gate and can board. The German security people are very stern and official. No joking with them. The English ask questions about why you are there and how long you will stay. Security is very tight.
Yes, non-US citizens can use Clear for expedited airport security screening.
Department of Homeland Security
the airport security has increased
Non-US citizens may find navigating through airport security in the US to be straightforward if they follow the rules and procedures in place.
yes
Yes, non-US citizens can apply for TSA PreCheck to expedite their airport security screening process.
No, only ticketed passengers are allowed past security checkpoints to meet someone at the airport gate.
Check with the airlines you are flying, and in the US with TSA.
No, you cannot bring a razor through airport security.
No, you cannot go through security twice at the airport.
Yes, you can wear jeans through airport security.
There is no easy answer to this question. Security varies from airline to airline and airport to airport. I can confirm this from a recent trip that I made. It's a nightmare and I'm surprised that people are still travelling!