A federal court in Massachusetts that has become a popular destination for lawsuits challenging U.S. President Donald Trump's second-term agenda has moved to prevent litigants from engaging in "judge shopping" by suing in two of its courthouses that each only have one judge.

San Francisco and more than a dozen states have successfully — albeit temporarily — blocked President Donald Trump from revoking birthright citizenship. A federal judge in Massachusetts granted a preliminary injunction Thursday in a pair of consolidated lawsuits — New Jersey et al.