Grassley seeks study on change to foundation excise tax

"This isn't something to vote on without having studied who might benefit, who might be hurt, and what affects [sic] this would have on foundation payout rates," Grassley said in prepared remarks. "Flattening the rate without mandating that the tax savings be paid out seems like it's rewarding those who just do the minimum while hurting those who go above and beyond what's required." 

The amendment will likely be voted on next week when the Senate returns its attention to the extender bill. Senate Finance Chairman Max Baucus (D-Mont.) expects that several amendments will be debated at that time. 

"We're looking at all amendments," he told reporters.