Republican Chuck Grassley vows to vote against a national abortion ban

The longest-tenured US senator joins a growing chorus of conservative lawmakers opposed to such a restriction

The longest-tenured Republican in the US Senate has pledged to vote against a national ban on abortions after 15 weeks of pregnancy which a prominent fellow party member and chamber colleague proposed last month, joining a growing chorus of conservative lawmakers opposed to that idea.

Chuck Grassley, who's been one of Iowa's senators since 1980 and is seeking an eighth term in his seat during November's midterms, expressed his opposition to such a ban during a televised debate Thursday night with his Democratic challenger Mike Franken.