BISMARCK (AP) — North Dakota’s governor positioned the   state Tuesday as a primary battleground in the fight over abortion rights, signing into law the nation’s toughest restriction on the procedure.

Minutes after Republican Gov. Jack Dalrymple signed three anti-abortion measures — one banning them as early as six weeks into a pregnancy — unsolicited donations began pouring into the state’s lone abortion clinic to help opponents prove the new laws are unconstitutional.