The average achievement in K-12 has been dumbed down through massive immigration and decreasing standards in many schools. But the right side of the Bell Curve in the US still achieves at a high and competitive level and our colleges turn out plenty of citizen tech majors according to several recent studies.
All too many corporations just have an interest in flooding the job market with tech grads by lobbying for more H1-Bs and higher immigration. They just want to lower pay in the US by increasing the supply of applicants.
TIMSS results show our kids in calculus and physics-the highest math and science classes in high school - still perform last and near-last, respectively.
But I don’t doubt what you say either. just like contractors hire illegals because they work for less.