The US Treasury Department announced on Friday that it is sanctioning Colombian President Gustavo Petro “for his role in the global illicit drug trade.” Also sanctioned are Petro’s wife and son, and Colombia’s interior minister.

The last time Andrés Fernando Tufiño Chila’s sister heard from him was about a year ago when he told her he was heading out to fish for work, she said. Last week, she was shocked to learn that her brother was aboard an alleged drug vessel that was struck by the US military.

President Donald Trump on Thursday insisted that he could continue to launch strikes against alleged drug traffickers abroad without Congress first passing an official declaration of war.