A group of bipartisan lawmakers introduced legislation to block President Donald Trump from invading a NATO country or territory, including Greenland.

As the Earth warms, new shipping routes from one side of the globe to the other are opening around Greenland, making the vast island a strategic priority for superpowers.

A bipartisan U.S. congressional delegation is headed to Copenhagen later this week in an attempt to show unity between the United States and Denmark as U.S. President Donald Trump continues to threaten to seize Greenland,

The Florida Congressman introduced the Greenland Annexation and Statehood Act to Strengthen U.S. National Security and Put Our Adversaries on Notice bill Monday, aimed at "securing America’s strategic national security interests in the Arctic and countering the growing threats posed by China and Russia."

Russian Security Council Deputy Chairman Dmitry Medvedev said Greenlanders could vote to join Russia if U.S. President Donald Trump did not move quickly to secure the Arctic island, Interfax reported on Monday.

U.S. President Donald Trump's repeated threats to take control of Greenland are straining relations with NATO allies.

In April, Reuters reported that some Silicon Valley tech investors had been advocating for the idea of a "freedom city" in Greenland, which the outlet described as “a libertarian utopia with minimal corporate regulation,” citing three individuals familiar with the matter.

President Trump has said that he would like to make a deal to acquire Greenland, a semiautonomous region of NATO ally Denmark, to prevent Russia or China from taking it over.