Illegal immigrants in the U.S. live under legal and systematic discrimination, said the Human Rights Record of the United States in 2011 released by China on Friday.

The report was issued by the State Council Information Office of the People's Republic of China.

It said, citing media reports, that after Arizona passed its anti-illegal immigration bill, the State of Alabama began implementing its immigration law on September 28, 2011.

"The Alabama immigration law provides differentiated treatments to illegal immigrants in each of its term, rendering their daily lives rather difficult," said the report.

It cited the critics argument as saying that the law runs counter to the U.S. Constitution and to certain terms in relevant international human rights law regarding granting equal protections to illegal immigrants.

The State of Georgia passed an anti-illegal immigration law which outlaws illegal immigrants working in the state and empowers local police officers to question certain suspects about their immigration status, it said, citing reports carried by The New York Times.

It said illegal immigrants suffered ferocious maltreatments, as grave problems in many U.S. detention facilities for immigrants were revealed by different organizations, such as lack of medical care, the use of excessive force and "abusive treatment" of detainees.

Citing a report released by an Arizona-based non-profit organization, it said thousands of illegal immigrants detained across the border between Mexico and Arizona are generally maltreated by U.S. border police, being denied enough food, water, medical care and sleep, even, beaten up and confined in extreme coldness or heat, suffering both psychological abuse and threats of death.