President Donald Trump recommended that Spain build a border wall across the Sahara desert to stem the Mediterranean migrant crisis, Spain’s foreign minister said this week. The Guardian reports that Spanish Foreign Minister Josep Borrell relayed Trump’s remarks to attendees at a luncheon in Madrid. His comments were widely reported in Spanish media. Trump is thought to have made the suggestion in June when Borrell accompanied Spain’s King Felipe and Queen Letizia on an official trip to the White House. A foreign ministry spokesperson confirmed Borrell’s comments to the Guardian, but declined to comment further. According to Borrell, Trump brushed off concerns about the plan’s feasibility, claiming that “the Sahara border can’t be bigger than our border with Mexico.” The U.S.-Mexico border is about 2,000 miles long, while the Sahara desert stretches an estimated 3,000 miles across 11 countries in northern Africa; at roughly 3.6 million sq.