The Democratic National Committee chairman will appear at two fundraising events in Mexico City next month — one a happy hour and another a dinner.

According to the official invitations posted on the DNC website, admission tickets range from as little as $25 for students at the happy hour to as much as $15,000 for the dinner. Both events are scheduled for Saturday, Sept. 28.

Perez has a large potential audience in Mexico. According to the State Department, there are 1.5 million Americans living in the country. And President Donald Trump has given Mexico a prominent role in his agenda, in particular on immigration and trade issues.

Organizers are requiring attendees to give proof of U.S. citizenship or permanent residency, as it is illegal for foreigners to contribute to American campaigns.