Hospitals are facing questions about why they denied care to pregnant patients and whether state abortion bans have influenced how they treat those patients.

Senate Finance Committee Chairman Ron Wyden, an Oregon Democrat, sent inquiries to nine hospitals ahead of a hearing Tuesday looking at whether abortion bans have prevented or delayed pregnant women from getting help during their miscarriages, ectopic pregnancies or other medical emergencies.

Republicans on Tuesday assailed the hearing, with outright denials about the impact abortion laws have on the medical care women in the U.S. have received, and called the hearing a politically-motivated attack just weeks ahead of the presidential election. Republicans, who are noticeably nervous about how the new abortion laws will play into the presidential race, lodged repeated complaints about the hearing’s title, “How Trump Criminalized Women’s Health Care.”