Trump’s Mexico Deal Unproven as Migration Drops in Summer Heat

Official tells reporters that hot weather played a role
Trump has praised Mexico’s stepped up migrant enforcement

U.S. Border Patrol agents escort a family of migrants that turned themselves in along the Rio Grande River in Roma, Texas.
Photographer: Victor J. Blue/Bloomberg

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By Josh Wingrove

July 10, 2019 at 6:31 PM UTC

Updated on

July 10, 2019 at 7:19 PM UTC

This article is for subscribers only.

It isn’t clear whether President Donald Trump’s deal with Mexico to stem migration over the U.S. southern border is working.

A senior U.S. Customs and Border Protection official told reporters on a conference call that the number of migrants apprehended on the border fell in June, compared to May, due to hot weather. But the official later said the June 7 deal Trump negotiated with Mexico had an unspecified impact on reducing crossings, especially by large groups.