Commissioner John B. Weller and surveyor Andrew Gray had been sent to the border of the United States and Mexico to mark a line that existed only on maps, and the work was not going well.

A map created by Newsweek highlights the states facing the biggest challenge and illustrates why the U.S.-Mexico border in particular is such a contentious issue. The debate surrounding migration ...

As the current race for the White House has shown, migration - and who can and who cannot cross the U.S.-Mexico border ... data and the Open Borders Index to create a map showing countries ...

Construction crews are filling seven “vulnerable gaps” in the border wall system, according to Customs and Border Protection.