States allowing medical marijuana had lower overdose rates for painkillers, researchers find.
States with medical marijuana had 1,729 fewer overdose deaths in 2010.
He becomes the 9th GOP governor joining the Obamacare coverage expansion.
The move is a rare one for a southern politician in a tough reelection battle.
Joni Ernst appears to support keeping Medicaid recipients on the program.
Shefali Luthra | Kaiser Health News
(Joe Ellis / AP)
The coming fiscal disaster has crept into the short-term.