The list of things 15-year-olds are not legally allowed to do in Oregon is long: Drive, smoke, donate blood, get a tattoo -- even go to a tanning bed. But, under a first-in-the-nation policy quietly enacted in January that many parents are only now finding out about, 15-year-olds are now allowed to get a sex-change operation. Many residents are stunned to learn they can do it without parental notification -- and the state will even pay for it through its Medicaid program, the Oregon Health Plan.