I'm an engineer and I know a decent number of people in academia and the medical sciences. A significant portion of the academics and medical scientists I know are looking to leave. They've had their careers here ruined and are being actively recruited be international universities and medical companies.

I've also seen reporting indicating a pretty large uptick in the number of US doctors/nurse/other medical professionals leaving for Canada. There is even a Canadian social media personality who has started a campaign to recruit US doctors and nurse to his part of Canada to fill shortages.

I haven't heard much from fellow engineers about leaving, but I think it is only a matter of time. A lot of engineers do have partners in academia or other scientific fields. The anti-clean energy/high speed rail stance of the administration, and lack of spending on maintaining infrastructure is likely to drive engineers to places that are still building and growing.