As an American, I think everyone should stay away until trump is gone. The only way to drive trump out is to hurt the American economy. Boycott American goods, don't travel to America until he's gone.
At best, this is stupid posturing--at worst, it's just plain stupid. How would a boycott lead to Trump's removal? How would cutting yourself off from the American economy hurt Trump?
Once local shopkeepers, business owners and workers realise that the 'brain drain' caused by these policies, as well as the lack of tourists spending dollars in their establishments etc. is causing actual pain to their hip pockets, then they may realise that being a part of the global community may be a good thing, and the isolationist policies not so much.
By the same token, I would ask you how US imposed economic sanctions on other countries are expected to work to depose the leader of those said countries? Sanctions usually affect the general population who usually have nothing to do with their leader's actions. We end up with children and other innocents dying from starvation or disease while the regime continues unabated.
The different with the US is that (hopefully), the people can have sway over the President's actions, and take action themselves to effect change.
I'd be grateful if you could cite the specific illegal - i.e., against specific sections of the US Code - actions President Trump has taken since he's been in office. Chapter and verse, please.
Keep in mind that just because you don't like what he's doing doesn't make it illegal.
Boycotting US goods would affect one of the corner stones of Trump's campaign of bringing back jobs/improving US economy. A poor economy would lead people to eventually tire of Trump antics and his methods eventually leading to voting him ( and possibly those associated with him) out office
Specific oxes would be gored, but it would be a wash, overall.
The categories of people who're affected by the travel ban tend to cost the United States money in terms of public assistance, et. al. My guess is that the net economic impact - especially when considering the cost of the crimes that demographic will no longer be able to commit within the United States - will be positive.