This is the will of people who voted the current administration into power. Its a democratic country, politicians have to respect what the people want, a recent video which reflects the thoughts of majority:
https://www.youtube.com/watch?v=c3FcCTXRiKo
They don't want legal immigration except in cases where it is in the national interest i.e a Deepseek AI researcher wanting to move to the US - bet your bottom that person ain't waiting for a green card.