MEXICO CITY, Mexico (AFP)—Mexico's President Claudia Sheinbaum on Friday condemned the deaths of three Mexican nationals after they were taken into custody by US immigration authorities this year. "This can't be happening," Sheinbaum told reporters, referring to the death of a 19-year-old at a detention center in Florida on Monday and two others who died earlier this year. "The report says the young man killed himself," Sheinbaum said. "Nonetheless, we...