“If skeptics want their voices heard in scientific discourse, they should try to get their findings published in the peer-reviewed literature. They would then be assessed on their merits through peer review.”

This is the correct way to challenge a scientific idea. Trump is trying to undermine the current consensus by bypassing the peer-review system because of politics. It's not fashionable to accept findings from someone who's been educated in this field, so conservatives are throwing out straws for their faithful to latch on to.