Hillary Clinton's presidential campaign unveiled a new ad spotlighting Donald Trump's feud with the Mexican president following their meeting earlier this week.

After meeting with Mexican president Enrique Peña Nieto, Trump said the two men discussed the GOP nominee's proposed southern border wall but not who would pay for it. Nieto disputed this account, and later reiterated on Twitter his refusal to ever pay for the wall.

The Clinton campaign's new 45-second video labeled the incident, "Trump's embarrassment in Mexico."

"As a candidate, Donald Trump has already embarrassed us on the world stage," reads text onscreen in the ad. "Imagine him as president."

Clinton may seek to make an issue of Trump's relationship with the Mexican government when she meets Trump on the debate stage in New York later this month.