In at least one case so far, a brawl has broken out due to food shortages and elsewhere, migrants are complaining that they have lost weight and cannot eat their fill, according to both migrants and groups working for migrants' rights to NBC News.
It looks like small, small stones and that's all you get, says Salvadoran Alfredo Parada Calderon, who has been in custody in California for almost a year.
A woman whose husband was recently sent back to El Salvador after three months in custody tells NBC News that her husband said many of the migrants were given "two tablespoons of rice" and went hungry.
The Trump administration's tough stance on illegal migrants on American soil has resulted in overcapacity at migrant detention centers. In June alone, the immigration authority ICE detained nearly 60,000 people - almost 45 percent over the stated capacity from Congress.
According to ICE's standard for food service, migrants should be served three meals a day, two of which should be hot and with "no more than 14 hours between dinner and breakfast."
Tricia McLaughlin, spokesperson for the Department of Homeland Security, says in a statement to the TV channel that "all allegations of food shortages or inadequate conditions at ICE's detention centers are false".
