People can find support for anything they want in the Constitution.
It is a substantial right protected by the U.S. Constitution. O verriding this presumption requires proof beyond a reasonable doubt presented to a jury of your peers. For those of you who think this is hopeless, the Supreme Court would never rule that way, there is TOO much case law to the contrary. Just keep in mind that things do change, and just because a lot of people think something is write doesn't necessarily make it right. Do you think a child has a right to contact with both parents.