Haiti advocates in the United States are calling on the Biden administration to rethink its approach toward the country amid gang warfare threatening to topple the U.S.-backed government. Haitian acting Prime Minister Ariel Henry is in Puerto Rico‚ unable to return to his country under threat of “civil war” by an alliance of gangs. Henry had left Haiti on a mission to secure a Kenya-led police force to supplement the Caribbean nation’s own police in a U.S.-backed attempt to prop up his...