U.S. drawing a line against Putin in Europe (Politico)
Rubio and Trump’s South Carolina showdown (Politico)
Speaker Ryan passes first test with Sunday show marathon (The Hill)
Libya embassy email warned Clinton not to emphasize video (The Hill)
Scientists question Jerry Brown’s claims again (Breitbart)
Rubio scores billionaire backing (New York Times)
Geriatric Democrats should fear Marco Rubio and the Republican youth wing (Telegraph)
Ryan vows ‘bottom up’ effort to unite GOP (FOX News)
GOP candidates push for debate changes; Rubio and Bush battle for position (USA Today)
Fiorina blasts ‘The View’ hosts for mocking her debate comment (Washington Post)
Officials launch bus tour to promote California health insurance exchange (Los Angeles Times)
