No it wouldn't, rather Congree would just find new ways to screw us. For example, they might start taxing certain goods and services at different rates to encourage or discourage consumption or other behavior. Or maybe Congress will tax different areas of the country at different rates depending upon economic need. And you can bet that Congress will prohibit the sellers of goods and services from itemizing the sales tax on the sales reciept so that the buyers can't tell how much the gov'ment is picking our pockets.
Don't misunderstand: I am in favor of a national sales tax provided the Federal income tax is repealed, the IRS is disbanded, and any change in the sales tax, including rebates, exemptions, etc., requires the vote of 3/4ths of both the Senate and the House. Yes, I realize that a national sales tax is imperfect and there will be inequities, but the alternative is to continue to complain about the current system. What has convinced me to support a national sales tax is that it will tax the underground economy, including illegal aliens and drug dealers.
HR 25 contains languages which says it becomes law only after the repeal of the 16th amendment.