Science organizations operate on shoestring budgets and can little afford disruptions of this sort for grants that have already been approved. Not to mention the fact that the new review criteria may have little to do with scientific merit but on keyword hunting or other opaque processes. As has been mentioned many times in the last few months, government investment in science and technology is critical for the US to remain an economic and military leader, and has garnered broad bipartisan support in the past. Scientific leadership is one of the factors that has made the US a great nation. (Edit: grammar).
Yes. That's exactly what elections are about.
People vote on what they want the direction of the country to be and what policies and projects receive funding. Same as it ever was.