Language barrier, low pay rate (discrimination exploited), unable to attend college or university.
They first face the risk of deportation they have to find a job find people to support them even though they are here illegally like finding somewhere to live if they have kids they need find a school for them
Lack of good English,
Racism and discrimination is a huge problem in the US.
Getting a long-term work is one of the challenges for an illegal immigrant, and because of the employment problem, they become unstable financially