A North Dakota judge issued an arrest warrant Wednesday for Green Party presidential candidate Jill Stein, who is being charged with trespass and criminal mischief for allegedly vandalizing equipment at a pipeline opposed by a Native American tribe and environmentalists.

Morton County Sheriff Kyle Kirchmeier said Ms. Stein and her vice presidential candidate, Ajamu Baraka, were being charged with the two misdemeanors for spray-painting messages on a bulldozer on Tuesday. He said he was alerted to video of Ms. Stein painting...