Judy Woodruff:

Delaying Brexit would need the approval of all of the other 27 E.U. member states.

Back in this country, another major winter storm socked parts of the Western U.S. Flooding rain swamped roads in Northern California, and officials urged evacuations along sections of the Russian River.

Meanwhile, relief came for 183 passengers stuck in an Amtrak train in the Oregon mountains. Fallen trees blocked their way on Sunday night. They finally got moving again early today.

Former Vice President Joe Biden says he has cleared a big hurdle to running for president in 2020. He tells The Washington Post that he need to decide if he could put his family through a tough campaign. But he says they now want him to run. However, he says he has not made a final decision.

In North Carolina, Republican Mark Harris says that he will not run again in a redo election for a congressional seat. His apparent victory over Democrat Dan McCready was thrown out last week over allegations of ballot fraud. Harris says that he has surgery scheduled for next month. His chances were considered weakened by the scandal.

A federal appeals court in Washington has cleared the way for AT&T's takeover of Time Warner. A three-judge panel rejected the Trump administration's appeal to block the merger, arguing that it would limit competition and hurt consumers. The takeover is valued at $81 billion.

Fiat-Chrysler announced plans today to invest $4.5 billion in the Detroit area, and to create 6,500 jobs. Plans include a new assembly plant, the city's first since 1991.

And on Wall Street, the Dow Jones industrial average lost 34 points to close below 26058. The Nasdaq fell five points, and the S&P 500 slipped two.

Still to come on the "NewsHour": whether Vietnam can serve as a model for the future relationship of the U.S. and North Korea; India launches an airstrike in neighboring Pakistan; new details on immigrant children separated from their families by the U.S.; and much more.