By Steve Holland and Jeff Mason WASHINGTON (Reuters) -President Joe Biden on Tuesday vowed to protect abortion rights and warned that a potential Supreme Court ruling overturning its landmark decision legalizing the procedure nationwide could undermine other freedoms that Americans possess. Biden, a Democrat, made his remarks after a draft Supreme Court decision, leaked late on Monday, showed that its conservative majority is prepared to overturn the 1973 Roe v. Wade decision. The court confirmed the authenticity of the leaked document. The president made clear that his administration is ready…