Five years ago, before he was a candidate for president, Donald Trump was pretty sure he knew what to do about Afghanistan. It was a losing proposition, "a complete waste" in terms of "blood and treasure."

"Why are we continuing to train these Afghanis who then shoot our soldiers in the back?" he asked on Twitter in 2012. "Afghanistan is a complete waste. Time to come home!"

More recently, candidate Trump was less certain about exactly when the U.S. should exit the struggle that he had railed against continuing.

President Trump's visit to Arizona is already fraught with controversy. The mayor of Phoenix asked the president to hold off staging a campaign rally in his city following the recent violence in Charlottesville, Va. Then, there are the hints Trump has dropped that he might issue a controversial pardon for the former local Sheriff Joe Arpaio, who was recently convicted of criminal contempt of court for disobeying a federal judge.

Before a solar project, Mark Holohan usually gives his customers plenty of time to mull over the cost. But lately, installers are scooping up panels so quickly that Holohan has trouble guaranteeing a price for too long.

"We have a sort of panic buying mode in the marketplace right now. Inventories have fallen. Availability has decreased. Prices have risen," Holohan, the solar division manager at Wilson Electric, said over the clatter of machines and workers in the company's warehouse outside Phoenix, Ariz.