An invasion of frigid air from the Arctic is sweeping south from the Plains and Ohio Valley Sunday, moving towards the Southeast and East.
Threat level: The colder-than-average temperatures threatens public health for those exposed to the wind and cold, and may harm water and power infrastructure from North Dakota to Texas, on eastward.
Why it matters: Venezuela under Maduro has been a massive problem for Latin America and the U.S. It's accounted for the largest modern-day migration in the Western Hemisphere — nearly 8 million people have fled Maduro's regime in the past decade.
