17 states, including California, are suing the Trump administration over changes to the Endangered Species Act.
The administration wants to put in place a rule that would remove blanket protections for animals newly listed as threatened.
That new policy would also make it easier for animals to be removed from the endangered species list.
Attorney General, Xavier Becerra, announced Wednesday that the state has filed its lawsuit against the changes in a San Francisco federal court.
“Now is the time to strengthen our planet’s bio diversity not to destroy it. But instead of choosing to protect these species the Trump administration has decided to backslide on longstanding regulatory protections implementing the endangered species act,” said Xavier Becerra.
This lawsuit follows a similar one several environmental groups filed last month.
Some of the new rules begin taking effect Thursday.