This topic was raised on a naturist hikers' message board I frequent. One member mentioned that he helped get Baker Beach, near San Francisco, sanctioned as a clothing optional beach.

He defended a woman in court who had been cited for public indecency or some sort of offensive nudity when she was discovered sunbathing topless in a secluded spot of that beach. His defense questioned why the larger than life statue outside the courthouse of a woman holding the scales, with a breast exposed, was not indecent or offensive to the thousands passing by in traffic each day; yet this petite woman, by herself in a quiet spot, was considered publicly indecent by a ranger who went out of his way to find her.

I don't believe any legislature in the US is ready to allow women to go topless anywhere men are allowed, but if nobody fights the narrow-minded movement to categorize topless women as sex offenders, broad & ignorant laws will continue to be proposed and passed. Rock on, Liana!