Without a tax increase there will soon be runaway inflation. But Congress refuses to raise taxes. Thus, before long there will be runaway inflation. That means that you should borrow all the money you can right now.

1. Without a tax increase there will soon be runaway inflation
2. Congress refuses to raise taxes
3. Thus, before long there will be runaway inflation (1,2)
4. You should borrow all the money you can right now. (3)