(Trent Nelson | The Salt Lake Tribune) Dr. Jesus Seade, Mexico's chief trade negotiator, speaks at a news conference in Salt Lake City on Friday May 17, 2019. At right is José Borjón, Consul of Mexico in Salt Lake City.(Trent Nelson | The Salt Lake Tribune) Dr. Jesus Seade, Mexico's chief trade negotiator, works on a trade deal after abruptly leaving a news conference in Salt Lake City on Friday May 17, 2019.