Trump suggested Spain build a wall across African Sahara to stop migrants, minister says

Spain has no sovereignty over the desert.

A ministry official told ABC News that Spanish Foreign Minister Josep Borrell spoke at a lunch event this week in Madrid about Trump’s purported remarks on the desert, which Borrell said the president made during his June visit to the United States.

The United States' border with Mexico spans nearly 2,000 miles, while the 3.5 million-square-mile Sahara is about 3,000 miles long and stretches across nearly a dozen North African countries.

Spain has two small enclaves in North Africa, Melilla and Ceuta, to which migrants do often try to gain entry by way of the those two land borders. It does not, though, have sovereignty over the desert.

The White House did not immediately respond to ABC News request for comment.

ABC News’ John Parkinson contributed reporting from the White House.