President Donald Trump completed his first official acts following his inauguration by signing a series of documents while surrounded by his family and Congressional leaders on Friday afternoon.

Trump cracked jokes as congressional leaders watched him repeatedly affix his signature to the papers, using two trays of pens that he handed out as keepsakes after using each just once.

“Where’s the health-care bill?” he joked at one point.

Trump also poked fun at House Minority Leader Nancy Pelosi (D-Calif.), saying about one pen: “Here’s one I think Nancy would like: Scott Pruitt.”

Pruitt, the conservative attorney general of Oklahoma who is Trump’s pick to head the Environmental Protection Agency, is bitterly opposed by Democrats for challenging the EPA’s anti-climate-change rules.

The papers Trump included a law that grants retired Marine Corps Gen. James “Mad Dog” Mattis a waiver to serve as defense secretary, despite being out of uniform for only three years instead of the required seven.

Trump also signed orders officially nominating members of his White House Cabinet and other appointees who can’t serve without Senate confirmation, as well as a proclamation declaring a “National Day of Patriotism.”

During his campaign, Trump promised to sign a series of executive orders to enact his agenda on his first day in office.

But earlier this week, he told The Times of London (paywall) and Germany’s Bild newspaper that “my Day One is going to be Monday because I don’t want to be signing and get it mixed up with lots of celebration.”

Trump advisers are preparing for announcements on a variety of fronts, whenever Trump gives the signal.

Obamacare, the fight against ISIS, immigration and a lobbying ban are among the issues expected to be addressed early on.