Morning News: Arctic chill moves over much of the country. Public hearings begin this week in House impeachment inquiry.

A massive arctic chill is moving over much of the country, bringing bone-chilling cold and snow. Public hearings start in the House impeachment inquiry this week, and Democrats are pushing back against witnesses that Republicans want to testify. Former U.N. Ambassador Nikki Haley says other Trump cabinet members tried to recruit her in an effort to resist the president?s actions. In Hong Kong today, an anti-government protester was shot at point blank range by a police officer. A former substitute teacher is facing charges, after disturbing video shows her beating a student.