California has been involved in 54 major legal cases with the Trump administration on a variety of issues, a tracker developed by a Marquette University political scientist reveals. Of these, the state has sparred with President Trump over climate change and the environment more than on any other issue.

California has won injunctions, policy reversals or other favorable rulings in 15 of the 16 major environmental cases that the courts have ruled on, with 15 cases pending.

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California’s win rate shows that lawyers in its attorney general’s office are bringing strong cases, says legal scholar Buzz Thompson, founding director of the Stanford Woods Institute for the Environment.

“It is also true that the Trump administration has been pushing the boundaries of legitimate environmental deregulation more than any prior administration,” he said. “He has been doing it quickly and in some cases sloppily. As a result, there are a lot more opportunities to revise environmental actions.”