JOHN YANG:

Lisa Desjardins on Capitol Hill keeping up with these events that are fast-breaking, thank you very much, Lisa.

In the day's other news: Wall Street had its worst day since September, amid investors worries that turmoil engulfing the president will block swift passage of his agenda. The Dow Jones industrial average lost more than 370 points to close back near 20600. The Nasdaq fell 158 points, and the S&P 500 dropped 43. The dollar also slipped again, wiping out all its gains since the election.

Max Wolff is watching all this for the investment firm 55 Capital.

MAX WOLFF, 55 Capital: A significant part of what's produced the six-month market rally is the notion that we're going to have radical deregulation, particularly, but not exclusively, around financial issues, and we're going to have massive tax cuts, particularly, but not exclusively, for large companies.

The weaker the president is, the less likely you are to get those tax cuts, and some of those premiums start coming out of the market.