NO, they do not.
Tax cuts do not cause deficits, SPENDING causes deficits. Kennedy, Reagan and Bush 2 all generated much higher levels of revenue by cutting taxes that then generated booming economic growth that in turn generated rising government revenue.
The problem has always been that because of base line budgeting Government spending ALWAYS increases year after year, it never ever decreases.
We do not have a taxing problem in this country, we have an out of control spending problem.
There MUST be cuts in Non-discretionary spending to have ANY impact on the budget...we have to find a way to reduce Social Security, Medicare and Medicaid. Other than that there is no solution...there are not enough tax dollars, nor enough tax payers, to solve the problem with revenue.
President Bush was killed when he tried a minor reform of Social Security...we will see what we are made of because the fabric of this nation will be torn apart no matter what choice we make...