Prospective presidential candidate Michele Bachmann says she wants a national sales tax, but can’t vote for it because she believes Congress would just add it to the current income tax system.

In a profile in The Wall Street Journal, Bachmann says she loves the FAIR tax proposal but just cannot bring herself to back it in the House.

“If we were starting over from scratch, I would favor a national sales tax," the three-term Minnesota congresswoman says. But the reality is that if it were enacted, the chances are “we would end up with a dual tax, a national sales tax and an income tax."