Republican Sen. Cindy Hyde-Smith of Mississippi blocked quick passage of a bill on Wednesday afternoon that would have enshrined protections for in vitro fertilization and for the doctors who perform the procedure.

Though she argued that she supports “the ability for mothers and fathers to have total access for IVF,” Hyde-Smith said she would not support Duckworth’s legislation.

“The bill before us today is a vast overreach that is full of poison pills that go way to far, far beyond ensuring legal access to IVF,” she argued.

The Mississippi Republican said that the bill did not include limits on genetic engineering, surrogacy, or even cloning.