I feel sorry for anyone living in the US right now, with an abject narcissistic retard in charge. The Democrats might be worried about supreme court nominations, but it's their (US) inadvisable system, of allowing the executive, ie Moron in chief Trump, to nominate 'his' people to the very highest judicial positions. Only a fully independant judiciary can deliver true equitable justice. Free from the executive government's control.
However it's not the Democrats caught between a rock and hard place, everyone in the US will suffer if Trump has his goons/sycophants/fellow nazis in the Supreme court undermine democracy and human rights. With their judgements.
The only people who might temporarily benefit from Trump's presidency are Israeli religious extremists, The UAE and Saudi Arabian governments, US far right nationalist religious bigots and Vladimir Putin. Of course.
The US Constitution is what allows the president to nominate 'his' people to the Supreme Court, subject to confirmation by the Senate. This is also true for other Federal judgeships, as well as Cabinet level posts.
I would question whether "only a fully independent judiciary can deliver true equitable justice." Sometimes I think the problem with our justice system is that the judiciary is too independent and unaccountable to the people. This may be how we end up with so many people convicted of crimes they didn't commit, since there's too little oversight or supervision.
Regarding the issue of people in the US suffering and whether anyone should feel sorry for them, it depends on where you sit. I've seen lots of suffering in this country over the past decades, and those who are suffering now were likely suffering just as much under any previous administration. The fact that so few people seemed aware of it (including most Democrats) is what contributed to the charge that Democrats were out of touch in the last election. That's probably the more troubling aspect of all of this, since it's not only a huge gulf of disparity between rich and poor. The gap between the political/cultural/intellectual elite and the "non-elite" has also widened considerably.
America can endure a bad president. We've done it before, so it's not like Trump is the end of the world or anything like that. But the fact that different factions and regions of the country seem to operate as if from completely different worlds and diametrically opposed perceptions is what seems more telling. This seems to go beyond mere disagreements or differences of opinion on politics. They way both sides regard each other, it's like they view each other as aliens from another planet.