June 2 (UPI) -- Mexican President Claudia Sheinbaum publicly urged U.S. Ambassador Ronald Johnson on Tuesday to focus strictly on the bilateral agenda and refrain from commenting on Mexico's domestic political affairs. "Mexico's affairs belong to Mexicans," Sheinbaum said during her morning news conference, referring to recent remarks posted by the U.S. ambassador on social media. Johnson had called for an end to the politicization of the fight against organized crime, arguing that political