I don't consider the elimination of tax expenditures, such as the ethanol tax credit or absurdly short deprecation lives of corporate jets, as an act of giving in to democrats. Elimination of such tax expenditures is good policy. Period.
The fact that democrats favor a certain policy does not automatically mean it is bad.
As to the corporate jet stuff, it's a bit of a mystery for Obama himself proposed such a deduction - now he's using the subject as a straw man. What's up with that?
The facts are that there is such a paltry sum deducted for the jets yet the Ethanol subsidies and farm subsidies add up to quite a tidy sum.