Having travelled to some pretty dodgy and autocratic places in my life, my advice is not to travel to the US if at all possible.
If you do have to travel there:
1. Make sure your passport has more than 6 months left to run.
2. make sure your visa is absolutely complete and covers you for exactly what you plan to do in the country
3. take ALL social media apps off your phone. If you use your real name on any of your accounts, change it before travelling.