Ironically, it was GOProud that invited Trump to attend the conference in 2011, in a last-minute addition to the conference. Trump's appearance caused some controversy when he declared that former Rep. Ron Paul (R-Texas) had "zero chance" of becoming president.

Trump will join former Republican presidential candidate Mitt Romney — who he vocally backed in last year's election — and a number of other Republican stars at the event. The speaking list includes Texas Gov. Rick Perry, Louisiana Gov. Bobby Jindal, Wisconsin Gov. Scott Walker, Sen. Marco RubioMarco RubioGOP senator floats eliminating the corporate income tax The Hill's 12:30 Report Rubio to vote for Tillerson MORE (R-Fla.), Sen. Rand PaulRand PaulDems blast Trump plans for deep spending cuts Trump team prepares dramatic cuts Paul, Lee call on Trump to work with Congress on foreign policy MORE (R-Ky.) and Rep. Paul RyanPaul RyanThe Hill's 12:30 Report Planned Parenthood president warns of health crisis for women if ObamaCare is repealed Juan Williams: Ethics cloud hangs over Trump MORE (R-Wisc.). Former lawmakers like Florida Gov. Jeb Bush and Sen. Rick Santorum (R-Pa.) will also speak at the conference.