Because the sequester is (and is likely to continue to be) very ill-defined in the minds of most Americans, the politics of it will devolve into a popularity contest between the major players. Which gets us to the fact that Obama is at (or close to) his high-water mark in terms of job approval, while Congress sits in political reporter/used car salesman territory.
The Washington Post’s Chris Cillizza, theorizing that there’s no way possible way Congress can win the sequester battle against President Obama. The thinking here is is based on three premises: One, that Obama believes the sequester ultimately will not be avoided, because Congress is dysfunctional and if they could have struck a deal on these cuts, there wouldn’t have been a sequester to begin with; two, that effects of the sequestered cuts will be felt by many Americans once they come into effect; and three, that Obama is significantly more popular than Congress. Given these three assumptions, it seems reasonable enough to conclude that if the sequester happens, Congress—and the GOP-led House of Representatives—will be blamed by the American public. It’s not a bad theory, though it’s still quite speculative given the assumptions. More information on the sequester here. source