^^^Pat Schroeder (D-Colorado) was never a United States Senator. She served in the House of Representatives. You might want to edit your post. Another name that pops up frequently as a Chi Omega member is former Sentator Kay Hagan, but she is not a Chi Omega.
AAMOF you're missing more than a few Greek names, if you're talking female US Senators.
I know someone who is working on a list for the House of Representatives. I understand she is in a cave and we won't hear from her for a while.