As you have asked abou the best engineering colleges in USA, I am mentioning them, check below for the details

Massachusetts Institute of Technology
Cambridge, MA

Stanford University
Stanford, CA

University of California—Berkeley
Berkeley, CA

California Institute of Technology
Pasadena, CA

Carnegie Mellon University
Pittsburgh, PA

University of Michigan—Ann Arbor
Ann Arbor, MI

Georgia Institute of Technology
Atlanta, GA

University of Illinois—Urbana-Champaign
Urbana, IL

Purdue University—West Lafayette
West Lafayette, IN

University of Texas—Austin (Cockrell)
Austin, TX

Texas A&M University—College Station (Look)
College Station, TX

Cornell University
Ithaca, NY

University of Southern California (Viterbi)
Los Angeles, CA

Columbia University (Fu Foundation)
New York, NY

University of California—Los Angeles (Samueli)
Los Angeles, CA

University of California—San Diego (Jacobs)
La Jolla, CA

Princeton University
Princeton, NJ

Northwestern University (McCormick)
Evanston, IL

University of Pennsylvania
Philadelphia, PA

Johns Hopkins University (Whiting)
Baltimore, MD

Virginia Tech
Blacksburg, VA

University of California—Santa Barbara
Santa Barbara, CA

Harvard University
Cambridge, MA

University of Maryland—College Park (Clark)
College Park, MD

University of Washington
Seattle, WA