Express support for a sales tax as the most fair and collectible tax, and argue against income tax due to the difficulty of enforcement and the presence of cheaters. Also point out that sales tax hits the wealthy more because they buy more expensive items.
What a bunch of IDIOTS. The most fair and COLLECTIBLE tax is a SALES TAX. 
The success of a tax is if it is widespread, can be enforced easily and is paid by those who actually purchase goods and services. 
The fewer collectors of a tax the better, and there are much fewer businesses to collect a sales tax than there are residents, who may or may not honestly pay an income tax There are a LOT of income tax cheaters and to enforce collection of income tax requires a new State agency. 
Auditing businesses who collect sales tax is very straightforward and very few businesses of any size cheat on sales taxes. 
As a person increases their income, they buy more expensive items, therefore they pay more sales tax, Most states eliminate groceries from sales tax, so as to not unfairly hit the poor, so the sales tax is on items people CHOOSE to buy. Rich people buy planes, expensive cars, expensive homes, expensive "toys", remodel homes, buy new appliances, etc. and therefore pay more sales tax.