Richard Sanchez is the sixth Home Grown player to sign with FC Dallas.
Per team and league policy, terms of the deal will not be disclosed.
"FC Dallas is excited to add Richard Sanchez as our next Home Grown player," FC Dallas head coach Schellas Hyndman said.
"I think he is by far the best goalkeeper I have ever seen at this age level, and he's shown that during his time as a goalkeeper for Mexico's Under-17 National Team. Being in first team training with Drew Keeshan and absorbing everything he can from a veteran like Kevin Hartman is going to be the best thing that could happen for Richard's career."