Back to reality: Waves of US-deported Mexicans struggle to survive.

More undocumented migrants in the United States are being targeted for deportation under President Donald Trump's immigration crackdown.

It could affect up to six million Mexicans living there.

But Mexico may not be ready for an influx of deportees returning home.

Al Jazeera's John Holman reports from Mexico City.

Latin America, Mexico, Business & Economy