As you are looking for list of Universities in USA accepting IELTS Score for admission, so here I am providing following list:

Top IELTS Accepting Universities in USA
Boise State University1
Ball State University
Hawaii Pacific University
Auburn University — Auburn
California Institute of Technology
Central Michigan University
Georgia State University
Eastern Michigan University
Florida Institute of Technology
Harvard Business School
Georgia Institute of Technology
George Washington University
Montana State University, Bozeman
Gannon University
Lamar University
Rochester Institute of Technology
University of North Carolina, Charlotte
Missouri State University
University of Georgia2
Kansas State University
Texas Tech University
Temple University
University of Central Florida
California State University — Fresno
Columbia University
Fairleigh Dickinson University
Case Western Reserve University
Indiana University — Purdue University Fort Wayne
North Dakota State University
Brandeis University