As @jasonfurman has noted, a 2% cut would yield $5,508 for a high-income couple, but $500 to a single parent getting by on $25k.
Far better to mail out $2,000 checks to everyone.
1. It's slow. It only accrues as you accrue payroll earnings.
2. It only goes to those on payrolls, missing the unemployed.
It's a better response if you already know that the answer to every question is "cut taxes," and you didn't really listen to the question.