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Blasts of Arctic air have brought weather-related deaths, record-low temperatures and historic amounts of snowfall to parts of the United States.

House Speaker Paul Ryan backed his fellow congressional Republican, House Intelligence Chairman Devin Nunes, during a meeting over the Russia investigation Wednesday, capping off a months-long dispute between the committee and the Justice Department, multiple sources with the knowledge of the situation told CNN.

A former director of the US Office of Government Ethics on Friday called White House counsel Don McGahn "a cancer who has done much to undermine anti-corruption mechanisms in this country" following an explosive report published in The New York Times.

The Northeast faces another day of high winds and life-threatening cold as the remnants of a powerful winter storm continue to affect the region. CNN's Derek Van Dam reports.

After dumping rare snowfall on parts of the southeastern coast, a powerful winter storm is set to hammer the Northeast with up to 12 inches of snow and strong winds. By the end of this week, parts of the Northeast will be colder than Mars.

White House deputy press secretary Hogan Gidley calls Michael Wolff, author of White House tell-all book, a "crackpot" spreading false information.