President Donald Trump has repeatedly suggested that the U.S. should in some form control the territory.
"We need Greenland, very importantly, for international security," Trump told reporters Friday at the White House. "We have to have Greenland. It's not a question of do you think we can do without it. We can't.
"Greenland is very important for the peace of the world, not us, the peace of the entire world, and I think Denmark understands it. I think the European Union understands it. And if they don't, we're going to have to explain it to them."
Vance visited with second lady Usha Vance, National Security Adviser Mike Waltz, Energy Secretary Chris Wright, and Sen. Mike Lee, R-Utah. They reportedly dined with the troops and received briefings from military officials.