The complainant misuses constitutional protection from discrimination, several Hispanic and national civil rights groups said in a friend of the court brief.
The last big sticking point, said multiple sources plugged into the talks, is money for the Department of Homeland Security, which oversees immigration enforcement.
House incumbents are facing tough primary challenges, battleground matchups will be set and California could send a new member to Congress sooner rather than later.
Lancaster officials codified existing city policies limiting cooperation with federal immigration authorities at a time when such practices face fierce scrutiny nationwide.
The president also announced more than 20 new actions and commitments by federal agencies to advance women's health research, including $200 million for the National Institutes of Health.