Cotton has taken credit publically for giving President Trump the idea to purchase the island.
Sen. Tom Cotton (R-Ark.) in an op-ed on Monday defended President Trump's suggestion that the United States should purchase Greenland.
"The acquisition of Greenland would secure vital strategic interests for the United States, economically benefit both us and Greenlanders, and would be in keeping with American — and Danish — diplomatic traditions," the lawmaker wrote in The New York Times.
Reports emerged earlier this month that the president had taken an interest in buying the semi-autonomous island territory, which is home to more than 50,000 people. Trump confirmed his interest soon after, telling reporters that he was interested in the land for strategic purposes.
"I myself raised the prospect of acquiring Greenland with the Danish ambassador just last year," Cotton wrote on Monday, affirming his own long-held interest in Greenland.