Migrants from 177 countries accept Biden’s 'open invite’ to US border, complicating law enforcement: expert

Nearly 1.4 million undocumented immigrants from a staggering 177 countries traveled through Mexico to the United States from January to May, according to Mexico's National Institute of Migration.

Surges of illegal immigration "over brief periods of time" have happened in the past, said Mark Krikorian, executive director of the Center for Immigration Studies, but this "huge variety" of countries is unprecedented.

Considering there are 193 member states in the United Nations, nearly...