proponent

a person who advocates a theory, proposal, or project.

synonyms:
advocate · supporter · upholder · exponent · promoter · adherent · endorser · champion · defender · backer · subscriber · patron · espouser · friend · apostle · apologist

Donald J. Trump is a proponent of a wall along the southern U.S.A. / Mexico border.
Our president is a supporter/endorser/defender/champion/backer of a wall along the southern U.S.A. / Mexico border..

Propone

Similar to Propanone.

Organic Chemistry teacher: this chemical is called Propone.

Student: isn't it ProPANONE??

Teacher: NO TIMMAY, IT'S GOD DAMN PROPONE!

proponents

loons

Those Benghazi/Petraeus quitting conspiracy "proponents" sure are a bunch of loons.

Proponer

A more current version of proponent. Verb is to propone.

I’m a proponer of that idea
Do you have anything to propone?

proponent

Proponent is an intelligent, brilliant and hardworking person
Loves Sex,and hardly falls in love.
Good looking guy, Handsome without limit, dark skinned guy ,shy.
Tabulates ideas but takes less action proponents
Pr0p0nents support's 0pinions from wrong and right sources.
Passionate about success, Detest Mediocrity and likes women a lot

We need a proponent of Science in our next debate