So while some Republicans argued that rate cuts should be paired with other tax changes, like closing loopholes, in order to keep federal revenue level, Toomey countered that a tax package would have to go beyond those limitations to be big enough and long-lasting enough to spur the economy — even if those changes might increase the debt. (And he argues that tax breaks will spark enough economic activity to help offset any losses in federal revenue, an idea fiercely debated among economists).