One of Obamacare's biggest nightmares is back

Optima — a Virginia-based health insurer — will exit a slew of Obamacare exchanges in the state for 2018, the company announced  Wednesday. 
The insurer said it would leave many rural areas of the state, following the exits of large insurers like Anthem from the same areas. The company cited the other insurer exits as well as "uncertainty in Washington" as reasons for the exit.
"The decisions we made were challenging ones given the recent changes and amb