For starters, the interest earned in "regular" bank accounts is minimal, even is you stash away your after-tax savings in longer-term CDs.
Obama wants to punish those who are responsible savers, and might actually earn a little more money by investing in the stock market.
Oh, and for any of you proponents of the Roth IRA or Roth 401(k), whose after-tax contributions are supposed to grow and be wathdrawn tax-free, I give you the “Obama” example of breaking that “promise.” If he wants to tax smaller targeted educational accounts, he (and any like-minded liberals) sure as hell wouldn’t think twice about eliminating much larger tax breaks on the Roths.