Typical crazy leftist lie. Abolishing tax revenue means abolishing the United States. Anyone here thinks Cruz wants to abolish "only" federal income tax? He wants no such thing. He talks changing rates and brackets but he's keeping the income tax as the primary source. More here.
My take is that the entire list should be assumed to be pack of lies.
Actually, you could abolish (or reduce to a skeleton) the IRS if you went with a flat tax. I’ve stated here before why the Fair Tax has some issues for me, but it you had a true Flat Tax, any entity that pays out money would simply hold that percentage (e.g., 17% as suggested by Friedman) back and remit to the GAO. Your income tax return could be a postcard.