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Rep. Eric Swalwell (D-Calif.), a member of the House Intelligence Committee, told CBS' Margaret Brennan on Sunday that the impeachment inquiry has uncovered evidence of an "extortion scheme" involving President Trump withholding military aid to Ukraine to pressure its government to investigate his political opponents.

"It's important that the president has due process. And evidence is not a conclusion. We have enough evidence from the depositions that we've done to warrant bringing this forward. Evidence of an extortion scheme, using taxpayer dollars to ask a foreign government to investigate the president's opponent. But it's important that these witnesses raise their right hands and take questions from both Republicans and Democrats. The president is going to get that."
— Eric Swalwell

Why it matters: The impeachment inquiry is moving into its public phase this week, with three witnesses — top U.S. diplomat in Ukraine Bill Taylor, State Department official George Kent and former Ambassador to Ukraine Marie Yovanovitch — expected to testify in open session.

  • Democrats believe they already have enough evidence to impeach Trump and sent the case to the Senate for a trial, even without hearing from the White House witnesses who have refused to cooperate with the inquiry.
  • Witnesses acknowledge that there appeared to be a quid pro quo involving a White House visit for Ukraine’s president, conditioned on the announcement of investigations into Joe and Hunter Biden and the 2016 election.
  • They differ on whether military aid was also used as leverage. But key diplomats intimately involved in discussions with Ukraine, including Taylor and EU Ambassador Gordon Sondland, believe it was.

Go deeper: Schiff rebuffs call for Bidens, whistleblower to testify in impeachment probe

Go deeper

Thousands without power as "hazardous" winter storm lashes East Coast

Winter view from Charlotte as winter storm Izzy creates dangerous conditions in Charlotte, N.C. on Jan. 16. Photo: Peter Zay/Anadolu Agency via Getty Images

A major winter storm was lashing much of the East Coast on Sunday, causing widespread power outages and disrupting travel over the holiday weekend.

The big picture: Heavy snow and ice accumulations are "likely to produce hazardous travel," downed trees and more power outages from the Mid-South to the Northeast, per the National Weather Service. Some parts of the U.S. can expect to see up to a foot of snow through Monday.

Updated 1 hour ago - Science

Volcanic eruption in Tonga caused "significant" damage

This satellite image of the eruption on Jan. 15 taken by Himawari-8, a Japanese weather satellite operated by Japan Meteorological Agency and released by National Institute of Information and Communications Technology (NICT). Photo: NICT via AP

Significant damage has been reported in Tonga following an undersea volcanic eruption on Saturday, which covered the Pacific nation in ash and cut off communication lines.

Driving the news: The eruption triggered tsunami warnings across Tonga's islands and in other regions, including the West Coast of the U.S. and New Zealand.

North Korea launches 4th suspected missile test this month

A news broadcast in Seoul, South Korea, of an apparent North Korean missile test on Monday morning local time. Photo: Jung Yeon-je/AFP via Getty Images

North Korea's military fired "two suspected short-range ballistic missiles" eastward from Pyongyang on Monday morning local time, per South Korean and Japanese officials.

Why it matters: The fourth such launch since Jan. 5 comes days after North Korea's military warned of "stronger" action if the U.S. moved to have more sanctions imposed on the country.