As for Jared Kushner, even granting that he is a swell fellow and a peach of a son in law, he cannot fairly be described as having much in the way of knowledge and experience to qualify him for a White House position at the President's elbow. It would be far better to send him to a federal agency with a team of reliable assistants and a specific defined mission within his real estate competency.
If Kushner hit a few home runs in such a role, then, like a rookie in pro baseball, he could safely be advanced to the majors. Otherwise, put in a high White House position too soon, Kushner's career in government could wither as he fell prey to rookie mistakes.
I feel that the US experiment is a lost cause. The election of Trump is a hopeful reprieve, as was the election of Reagan. When Reagan was elected I was a propagandized HS senior, taught to hate, although I didn't fully buy into it. I finally did buy into supply side economics after reading David Stockman (among others) who was disregarded like Kushner is today, especially considering the media is a lot more hostile now. Foreign policy is not that difficult and I do not see why Kushner cannot do it reasonably well. He's not a brilliant whippersnapper like Stockman, but it's not rocket science we're talking about.
Let’s hope his career in government withers and he takes his liberal Democrat influence and ways back to the public sector (along with all the liberals and GOPe schemers he filled his father-in-law’s WH with).