You've no doubt read how a gaggle of right-wing operatives-- Eric Cantor (VA), Kevin McCarthy (CA), Paul Ryan (WI), Pete Sessions (TX), Jeb Hensarling (TX), Pete Hoekstra (MI), Dan Lungren (CA), Jim DeMint (SC), Jon Kyl (AZ), Tom Coburn (OK), John Ensign (NV), Bob Corker (TN), Newt Gingrich and Frank Luntz-- met during Obama's inauguration ceremonies and plotted how to further undermine the American economy in the hope of making the country ungovernable and turning people off to Obama.
The first part of their plan worked-- capturing the House in 2010 and grabbing enough Senate seats to obstruct and block every substantive bill President Obama has proposed for solving the economic crisis created during 8 years of the Bush administration.
Massachusetts Senator Scott Brown has tried to distance himself from this crowd-- except when it's come to voting in the Senate. Through not as frequently as Olympia Snowe or Susan Collins of Maine, Brown has gotten permission from McConnell to cross the aisle now and then when it didn't really matter much.
Overall, though, Brown has voted with the Republican obstructionists on 75.84% of the crucial, substantive rollcalls since being elected.