"This year ... it's really turned into a free-for-all on trying to restrict abortions," said Elizabeth Nash of the Guttmacher Institute, a reproductive policy group.
Legislative attempts this year to reduce abortions have been "very successful," Mary Spaulding Balch of the National Right to Life Committee told USA Today in a story published Monday.
Nash and Balch said the most significant legislation is a Nebraska bill signed into law this month that would ban most abortions at the 20th week of pregnancy.
In Oklahoma, the Legislature was expected to try to override a gubernatorial veto of a bill that would require doctors to show an ultrasound image to a pregnant woman seeking an abortion, though the woman could avert her eyes.
Bills in Mississippi, Missouri, Tennessee, Louisiana and Oklahoma would ban abortion coverage in any plan sold through future government-run healthcare marketplaces called exchanges.