Under the law, a woman can receive tubal ligation (getting her tubes tied) at the age of consent. However, the American Congress of Obstetricians and Gynecologists recommends that doctors provide individualized counseling and options, which is why many doctors try to talk women into contraception rather than surgery.
That said, the American Congress of Obstetricians and Gynecologists does not recommend dissuading or refusing patients. According to a treatment review from 2008 by the organization, almost all women are candidates for the minimally invasive procedure, and it is legal as long as the woman is at the age of consent. The problem is many doctors believe that just because a woman can doesn't mean she should. Patients still run the risk of complications from surgery, and the procedure may not even work. Many doctors feel that long-acting reversible contraceptives are better for patients.