Seems he got arrested for harassing Elizabeth Warren a couple of years ago.
Excerpt from a news article:
Upon seeing Warren at the event, the 5' 1" tall Sayoc approached her and said, "Like you I am part Native American but I am also part Filipino. Do you have a little Filipino in you?" When Warren responded that she did not, Sayoc replied, "Would you like a little Filipino in you?" He was immediately arrested and charged with having a really bad sense of humor.