'Reporter's Notebook': Understanding Thursday's impeachment vote

With a Thursday vote looming in the U.S. House of Representatives to authorize an impeachment inquiry of the president, many Americans are wondering what to expect next. It is now clear that the House will authorize a full-fledged impeachment inquiry, according to longtime Washington reporter and Yahoo News Chief Investigative Correspondent Michael Isikoff. House Speaker Nancy Pelosi knows she has the support she needs to authorize the inquiry or she wouldn't have scheduled the vote. But even with the results of the vote a foregone conclusion, Isikoff said he will be watching to see if any Democrats, especially from Trump-friendly districts, break from the pack and vote no.