PROVIDENCE, R.I. — A national anti-abortion group is pressing the state’s health insurance marketplace to offer plans that don’t cover abortion services, saying that failing to do so is “blatantly violating” the rights of those who object to the procedure.

In a recent letter to Democratic Gov. Lincoln Chafee, Democrats for Life of America said it is “gravely concerned” that all 28 of the individual and small group plans available through HealthSource RI in 2014 offer coverage for elective abortion.

Executive Director Kristen Day said Friday her group supports the federal health care overhaul but alternative health plans should be available for those who object to abortion on religious or other grounds.