World News Roundup

Investigators in the disappearance of Nancy Guthrie are now calling the man seen on home security video at the 84-year-old's home a suspect. President Trump has overturned a 2009 finding that greenhouse gas emissions are dangerous to human health. Another partial government shutdown seems imminent as lawmakers are unable to reach an agreement over funding for the Department of Homeland Security. CBS's Steve Kathan has these stories and much more in today's World News Roundup.