It will be exactly like the income tax.
When the income tax was first started, it only affected the upper portions of income and was graduated between 1% and 6% of income.
How's that "limited tax" working out for us now?
Social security. Started with 45 workers supporting 1 retiree. Now 2.9 workers per retiree. Think that's sustainable?
No argument that the starting numbers look good. Problem is, everything we know about bureaucracy is that they won't stay that way. Once an entitlement is started, it just gets larger and larger and more and more difficult to remove.
Like cancer.