Commentary On March 10 at the White House podium, Roberta Jacobson, the coordinator for the southern border, echoed President Joe Biden’s promise to address “the root causes of migration from Central America.” She and Biden are doing the opposite, creating a flood of new immigrants that will significantly change the United States. Biden’s policies are pushing migrants from and through the geostrategic country of Guatemala. It’s the only land route from South and Central America to the United States and has a porous 595-mile border with Mexico. Biden said he would “restore humanity and American values to our immigration system.” The migrants Biden’s policies are pushing and pulling to the United States risk murder, rape, and other abuses by Mexican cartels that control movement through the country. On their way to Mexico, and ultimately the United States, migrants travel through murder-ravaged Central America. They contend with gangs descended from militias …