Democratic U.S. Sens. Al Franken and Amy Klobuchar are co-sponsoring a bill that would override the Supreme Court's decision last week in the Hobby Lobby case.

The bill would ban employers from refusing to provide any health coverage, including contraceptives, guaranteed under the federal Affordable Care Act.

In a split decision, the Supreme Court ruled that closely held corporations did not have to provide coverage under the new federal health care laws if doing so would violate the owner's religious beliefs. The case was filed by Hobby Lobby, whose owners specifically objected to the requirement that companies provide coverage for emergency contraceptives.

Democratic U.S. Sen. Patty Murray of Washington is the lead author on the legislation, which is still being drafted. If the Senate passes the bill, it would face an uphill battle in the Republican-controlled House.

Women's rights are shaping up as a pivotal issue in U.S. Senate races across the country.

Franken has been critical of the Supreme Court's decision since it was issued.

"The Supreme Court made a terrible decision when it decided that a woman's boss can make health care decisions for her," Franken said in a statement. "Those choices should be between a woman and her doctor, plain and simple. The Court's ruling will deny women access to the health care services they need, and that's why we have to pass this important legislative fix."

The Alliance for a Better Minnesota, a group backing Democratic candidates, is pressuring one of Franken's Republican rivals, businessman Mike McFadden, to discuss his stance on the case. The Minnesota DFL has also targeted McFadden on the issue.