President of yemen travels to us for medical tests

I think there may be some confusion here. The President of Yemen, Abdrabbuh Mansur Hadi, has not traveled to the United States for medical tests.

In fact, President Hadi has been facing significant challenges in his country, including a civil war and a humanitarian crisis, and has not been able to leave Yemen for medical treatment or any other reason.

It's possible that you may be thinking of another individual or a different country. If you could provide more context or clarify what you are referring to, I'd be happy to try and help you further.