Given the stance Trump has taken, does it make sense to pursue a STEM masters in the US? Will it be possible to recover the costs (from an international student's perspective) and find work?
Trump's opposition to the H1B program was purely tactical, as Rubio had pushed to lift the visa cap during the 'Gang of Eight' immigration negotiations in 2013 ('Mark Zuckerberg's favorite Senator'). There would be zero support from Republicans in Congress to dismantle the program.
Obviously I can't speak for Trump, but I think it's accurate to say that the criticism of H1B visas is that they've been abused by tech companies wanting to hire foreign workers for entry-level jobs at low wages. The intent of the H1B was originally to attract real talent that we couldn't produce locally, such as specialists, PhDs, and experts with proven talent. The implication for you might be that, if H1B visas are reformed, you'll be less likely to get an entry level job after the masters degree, but should be better able to get a visa and a job in the USA as you advance in your career.
Trump's position was the "Intel, not Infosys" one, where people like you wouldn't likely see a change, except possibly for joeclark77's point about entry level jobs.
I am so interested in answers to this question....