(CNSNews.com) - Sen. Marco Rubio (R-Fla.), an Obamacare critic, has signed up for health insurance on the District of Columbia exchange, and he's accepted a $10,000 taxpayer subsidy to defray the cost of his family's health insurance. "It's an employer contribution," Rubio was quoted as saying on Monday. "It's available to every employee of the federal government." But as CNSNews.com has reported, some members of Congress are refusing the subsidy, saying it's not