Call the U.S. Capitol by dialing (202) 224-3121 and enter your zip code to be connected to your state Senators (Press 1) or House of Representatives (Press 2).
A) Know who represents you:
Hawaii State Senators: Mazie Hirono, Brian Schatz
Hawaii House of Representatives: Coleen Hanabusa (First District), Tulsi Gabbard (Second District)
B) Succinctly note the issue you are addressing, what your concern is, and what you would to see done. Thank your Congressperson.
C) Contact the White House directly via an online email template: https://www.whitehouse.gov/contact#page