Trade sanctions against America won’t work. Sanctioning Trump himself might.

So, Trump refused to give up his business interests when he became president, leaving the door wide open to control, whether through bribes or sanctions. And he and his family have taken enormous bribes from various authoritarian regimes. We'll see whether our allies figure out they can control Trump by hitting back with personal sanctions instead of tariffs (which would mostly hurt our poor, as if Trump cares at all about anyone but himself).If you want to deal with Trump, you have to do it directly.

Scott Gilmore, from Canada:

 

As I’ve pointed out before, the President can be successfully engaged, and countries like Ukraine, China, and Qatar have demonstrated this. When they want something from the United States, they skip the State Department, and even the White House staff. Instead of approaching their problem state-to-state, they go state-to-man. These countries focus on what Trump wants on a personal level – to enrich his family. So Beijing granted Ivanka trademarks, Qatar invested in one of Jared’s office towers, and Ukraine, with Slavic candor, simply wired half a million dollars to the President’s personal lawyer Michael Cohen.
...
Until this President, every previous modern occupant of the White House divested their assets upon assuming office. This eliminated the possibility personal business interests might benefit from political decisions. Conversely, it prevented others from threatening the President by attacking those assets. Trump, by refusing to give up his businesses, and by flagrantly violating the emoluments clause, has inadvertently handed us the perfect stick.
I propose that instead of taxing the import of American serviettes, we tax Trump. In the spirit of the Magnitsky Act, Canada and the western allies come together to collectively pressure the only pain point that matters to this President: his family and their assets. This could take the form of special taxation on their current operations, freezing of assets, or even sanctions against senior staff. Canada could add a tax to Trump properties equal to any tariff unilaterally imposed by Washington.  The European Union could revoke any travel visas for senior staff in the Trump organization. And the United Kingdom could temporarily close his golf course.