It was a bad end to a bad week on Wall Street. The Dow plunged 666 points Friday, or 2.5 percent -- the biggest percentage drop in a year and a half. For the year, however, it is still ahead. CBS News business analyst Jill Schlesinger discusses what rattled the market.

It was a bad end to a bad week on Wall Street. The Dow plunged 666 points Friday, or 2.5 percent -- the biggest percentage drop in a year and a half. For the year, however, it is still ahead.

President Trump is heading to Davos, Switzerland, to attend the World Economic Forum. The president's "America First" policies will contrast with what has typically been an event that champions globalization. "CBS Evening News" anchor Jeff Glor talks to White House and senior foreign affairs correspondent Margaret Brennan and business analyst Jill Schlesinger about what to expect.

President Trump is heading to Davos, Switzerland, to attend the World Economic Forum. The president's "America First" policies will contrast with what has typically been an event that champions globalization.

The Trump administration is imposing new tariffs on imported solar-energy components like solar panels. The White House says it's part of the president's pledge to put American companies first. But what will it mean for consumers? CBS News business analyst Jill Schlesinger explains.

President Trump is approving tariffs on imported solar-energy components and large washing machines in a bid to help U.S. manufacturers. The administration is imposing an immediate tariff of 30 percent on most imported solar modules, with the rate declining before phasing out after four years.