Raman,
It's a great question and a vital concern for many students. I think there are a few things to keep in mind, first and foremost, that no one can predict what will happen politically, but at the same time, time has borne out that people with good skills who graduate from good schools get offers.

Secondly that the president is the president for only four years at a time. And things will change between now and then.

Things will be easier the better school you go to and the better offer you secure, that is true. But there are still plenty of offers going around.
Best,
JF