A migrant family waits in Tijuana, Mexico, before being transported to the San Ysidro port of entry to begin the process of applying for asylum in the United States. A new Trump administration rule says immigrants who pass through a third country en route to the U.S. cannot apply for asylum at the U.S. southern border.

A migrant family waits in Tijuana, Mexico, before being transported to the San Ysidro port of entry to begin the process of applying for asylum in the United States. A new Trump administration rule says immigrants who pass through a third country en route to the U.S. cannot apply for asylum at the U.S. southern border.