Iowa Republican U.S. Sen. Chuck Grassley said Wednesday that President Donald Trump is overstating the need for U.S. control of Greenland, while emphasizing the importance of diplomacy and reaffirming his long-standing support for the independence of the Federal Reserve amid a Justice Department inquiry into Fed Chair Jerome Powell.

U.S., Danish and Greenlandic officials have met face to face to discuss President Donald Trump's ambitions to take control of Greenland, a semiautonomous territory of Denmark.

Danish officials and diplomacy experts have pushed back on his social media provocations, warning that informal approaches could jeopardize NATO security partnerships.