What Obama is proposing right now atm is not increasing taxes, it is getting rid of a variety of tax credits and close up loopholes. Increasing taxes would imply that an actual number is added to base tax codes. The real reason the Republicans took the house has little to do with their values and more to do with the last bunch was a lot of indecisive fools. Now we have a bunch of decisive fools, and they have decided to play chicken with the economy along with Obama.
Really the the main differences between Republicans and Democrats at this point is Democrats are willing to discuss cuts something they do not like at all. Republicans do not want to talk about raising revenues in anyway even if it were to only effect people that make bets on the economy such as hedge fund managers, people that literally contribute nothing to the actual products and services they bet on.