Texas and four other American states filed a lawsuit on Tuesday seeking to roll back the Obama administration's efforts to strengthen transgender rights, saying new federal health rules could force doctors to act contrary to their medical judgment or religious beliefs.

The lawsuit is the second in recent months in which conservative states have sued over federal efforts to defend transgender rights.

Social conservatives claimed victory on Sunday when a federal judge in Texas halted an Obama administration directive requiring public schools to let transgender students use bathrooms consistent with their gender identity. Now they're asking that same court to block new regulations intended to ban discrimination by doctors, hospitals and insurers against transgender persons.