Donald Trump on Monday celebrated his Iowa caucus victory by shouting out to former President Jimmy Carter. (Watch the video below.) But in the most backhanded, offensive, baffling way imaginable, using the November death of former first lady Rosalynn Carter as a jump-off point.

Police said the man was arrested at a security checkpoint for people waiting to view former President Jimmy Carter's casket as he lies in state in the Capitol Rotunda.

President-elect Donald Trump on Sunday said the nation owes former President Jimmy Carter “a debt of gratitude.” In a post on his Truth Social platform, Trump said the 39th president,

President-elect Donald Trump took to Truth Social shortly after news of former President Jimmy Carter's death.

While cold weather and heightened security most likely dampened turnout, thousands of well-wishers still traipsed through the snow and ice to pay final tribute to the 39th president.

"Nobody wants to see this, and no American can be happy about it," Trump said of the US flag flying at half-staff during his inauguration.

President-elect Donald Trump paid his respects on Wednesday as President Jimmy Carter lay in state at the Capitol Rotunda as part of state funeral rites. Trump has alternated among praise, criticism and even mockery of the 39th president.

President-elect Donald Trump paid his respects to former President Jimmy Carter as his body lied in state at the US Capitol Rotunda.

US President-elect Donald Trump paid tribute to the late Jimmy Carter as he lay in state in Washington on Wednesday.

President-elect Donald Trump, who has alternated among praising, criticizing and even mocking Jimmy Carter, came Wednesday to the Capitol Rotunda to pay his respects as the 39th president lay in state ahead of his funeral Thursday in the nation's capital.

Donald and Melania Trump held hands as they entered the Capitol Rotunda to pay their respects to the late President Jimmy Carter.