I worked in the US, arriving as a clueless 25 year old on an L1B visa. Later I think I was on a H1B and finally a green card. It was claimed in the applications that no American could do my job. I was a techie and decent but to state that I was pretty much world class was silly. I'm not surprised this is being looked into if that's what Trump is doing. I always felt sorry for the Americans in debt after college struggling while the Irish folks like me were living it large loving life.