Republican logic, now there is an oxymoron, is that somehow collecting less than we spend will cure the problem, that is the hallmark of Neo Reaganism, aka Neo Conservativism. Starve the beast!
During the second Clinton Administration the Federal Government received and spent about 19% of GDP. Rather than focusing on the spending the Bush Administration focused on the revenues. Both revenues and GDP have grown every year. Without the tax cuts we would not be running a deficit.
In effect all that they have done is used future obligations to pay for the tax cuts now.