The killings have particularly hit states like Michoacan, Guerrero and Oaxaca.
The mother and son were reunited in the Washington area before traveling to Texas, where they will live while their asylum claim is adjudicated.
"I just feel like her vocation was to fill the world with beautiful things."
"Trump's order leaves us with more questions than answers: How to ensure kids are safely returned to parents? When?" tweeted Virginia Sen. Tim Kaine.
An emotional cross-border meeting beckons for 200 Koreans separated by decades of conflict.