A fourth federal judge has sided with a group of plaintiffs, including the prosecutor who won just 24 of the state’s 100 counties to the president’s 78. Immigration issues have trended partisan from the state’s politicians at the federal and state levels, and the former U.S. House of Representatives member has joined colleagues across the country seeking halts to the administration’s policies.

In Boston on Thursday, U.S. District Judge Leo Sorokin became the latest to issue preliminary injunctions on immigration issues. In this case, it involves birthright citizenship for children of parents legally in America.

Other rulings on birthright citizenship have come in Concord, N.H., Greenbelt, Md., and Seattle.

Jackson joined four lawsuits in 21 days challenging the Trump administration; all were granted initial blocks.

Jackson joined this lawsuit filed by New Jersey Attorney General Mathew Platkin on Jan. 21.

In other moves with opposite policies on behalf of a state that elected both politicians, Jackson on Jan. 28 joined New York Attorney General Letitia James in a suit involving the freeze of federal government grants and funding.

He’s also with a James litigation trying to block Elon Musk’s Department of Government Efficiency from accessing Treasury Department records. On Monday, he joined the suit of Massachusetts Attorney General Andrea Joy Campbell that challenges the Trump administration of stopping cuts to medical research grants funded by the National Institutes of Health.

On Nov. 5 in North Carolina, Trump won his election over Democrat Kamala Harris by 183,048 votes of 5,699,141 cast. He won 78 of 100 counties. Jackson won his election that day over Republican Dan Bishop by 159,549 votes of 5,590,371 cast, scoring in urban areas while Bishop won 76 counties.