Surveillance cameras tower above the U.S.-Mexico border fence at Playas de Tijuana in Tijuana, Mexico.

President Donald Trump pitched congressional leaders on placing solar panels on his proposed wall along the U.S.-Mexico border, Politico and Axios reported Tuesday.

Trump’s suggestion reportedly came during a meeting with GOP House and Senate leaders, including House Speaker Paul Ryan (R-Wis.) and Senate Majority Leader Mitch McConnell (R-Ky.), at the White House on Tuesday afternoon. Trump said the electricity generated by the panels could help offset the expense of the wall, the news sites reported, which the Department of Homeland Security has estimated will cost more than $21 billion.

Trump said his vision was a wall 40 feet to 50 feet high and covered with solar panels so they’d be “beautiful structures,” the people said. The President said that most walls you hear about are 14 feet or 15 feet tall but…