The Obama administration will ask businesses to expand their use of solar panels, and is set to announce a $15 million program to help state and local governments build solar energy infrastructure.
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The former Florida congressman was found guilty of cocaine possession.
Former Florida Gov. Jeb Bush and Sen. Rand Paul (Ky.) run a close second.
Obama said he was hopeful a deal could be negotiated after Republican primaries.
Fifty-one percent of district voters said the scandal would prevent them from voting for him.
The former CIA director praised Hillary Clinton for supporting controversial CIA activities.
Obama declined to say who he would prefer in 2016.
"It's all nonsense," Putin said.
Sen. Warren's memoir "A Fighting Chance" is due to be released next week.
"It would give every excuse for the president to move," said Rep. Mario Diaz-Balart.