When did I say hijabs should be banned? Hijabs aren't banned all over the west, and certainly not in America, nor should they be. I'm not even suggesting that most Muslim societies force women to wear them. The point is that the pressures on women to dress this way or that here are not enforced by ridiculous punishments, even if they are still unfair, so your attempt to draw an equivalency is flawed.
Look at the Taliban, for example:
"In December 1996, Radio Sharia announced that 225 Kabul women had been seized and punished for violating the sharia code of dress. The sentence was handed down by a tribunal and the women were lashed on their legs and backs for their misdemeanor."
Or what about places like Iran and Saudi Arabia, where head-covering for women is still mandatory by law? And what about the many smaller communities in other countries where it is enforced by local, non-legal, traditional authority?
Obviously, there is no such parallel in the US or the West at large. Women aren't legally punished or formally prevented from being successful citizens if they do or don't dress in a particular way, even if you factor in gender discrimination, which is obviously still a problem here.
And finally, my point about sexuality still stands. The whole idea of purdah and female "modesty" in Islamic societies is just as based in sexuality and the proliferation of sexuality as pressures in the West to wear revealing clothing or get plastic surgery or what have you. They are two sides of a single, patriarchal coin.