SAN DIEGO (AP) — House Minority Leader Kevin McCarthy said Monday during a visit to El Paso, Texas, that, "It's more than a crisis. This is human heartbreak." Homeland Security Secretary Alejandro Mayorkas on Tuesday called the wave of migrants a difficult challenge but nothing new.

Spin and semantics aside, migration flows to the U.S. from Mexico are surging in a major way for the third time in seven years under Republican and Democratic presidents — and for similar reasons.

HOW HAVE FLOWS CHANGED SINCE JOE BIDEN BECAME PRESIDENT?

Border encounters — a widely-used but imperfect gauge that tel...