Trump tweeted Wednesday: "Another very bad terror attack in France. We are going to strengthen our borders even more. Chuck and Nancy must give us the votes to get additional Border Security!"
That's a reference to Senate Democratic Leader Chuck Schumer and House Democratic Leader Nancy Pelosi, who met with Trump Tuesday.
A suspected extremist sprayed gunfire at a Christmas market in the French city of Strasbourg Tuesday, killing three and wounding at least 13.
Secretary of State Mike Pompeo told "Fox & Friends" Wednesday it appears no Americans were killed or injured in the attack.
He also stressed the need for border security.