This paragraph doesn’t make sense to me:

Democrats said Mr. Obama could also support a demand from a senior Senate Republican, Charles E. Grassley of Iowa, to add a provision adjusting the alternative minimum tax so that it does not hit millions of middle-class taxpayers this year. That would add costs of nearly $70 billion over 10 years to a package that Republicans already say is too big.

Huh?

Under that logic, Republicans would oppose all tax cuts because they increase the size of the stimulus plan.

That’s clearly not the case. The bolded sentence is just weird.