Actually, you are a little late. In the 1950’s, the U.S. began to see an influx of foreign students from Japan, Taiwan and China. These were often the very top students in those countries.
Over the next decade, we trained them well and some of the brightest went back to their native countries and became professors in local universities.
Today, we are not getting the best students as they stay home to study at the top schools in those countries taught by professors trained in the U.S.
Take a look at the professors in most STEM colleges in the U.S. and you will find that they are not native Americans ... and you wonder why we have a problem?
Back in the 60's, the joke was that one prerequisite for advanced undergrad math courses was Chinese or one of the languages of India.