Republican presidential nominee Donald TrumpDonald John TrumpTrump says 'Failing New York Times' should be held 'fully accountable' over Russia report Trump says 'Failing New York Times' should be held 'fully accountable' over Russia report Trump tweets ICE will begin removing 'millions' of undocumented migrants MORE's hats say "Make America Great Again," but Hillary ClintonHillary Diane Rodham ClintonBroadway play 'Hillary and Clinton' closing early due to low ticket sales Broadway play 'Hillary and Clinton' closing early due to low ticket sales Facing challenge from Warren, Sanders touts strength against Trump MORE's campaign is asking why Trump won't make the items he sells in America.

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"He wears it like a crown — Make America Great Again — but Trump made his shirts in Bangladesh, his ties in China and his suits in Mexico," says a narrator in a 30-second video ad. 

"So don't believe the hat. You can't make America great again if you don't make things in America." 

The ad is set to air in the key battleground states of Pennsylvania, Iowa, Ohio, North Carolina and Florida.

The clip is just the latest attack by Clinton on Trump's business record. The Democratic nominee frequently hits Trump on the campaign trail for making some of his products in other countries. 

"Now, before he tweets about how he's really one who'll put 'America First' in trade, let's remember where Trump makes many of his own products. Because it's sure not America," Clinton said in a speech Michigan earlier this month.
 
"He's made Trump ties in China and Trump suits in Mexico instead of here in Michigan. He keeps saying it's not possible to make these things in America anymore. That's just wrong."