U.S. Representative Bill Foster (Illinois 11th) is working on the issue of speeding up vaccine approval. Along with former HHS secretary and current member of Congress Rep. Donna Shalala (Florida 27th), Foster is spearheading a letter signed by dozens of members of Congress to HHS Secretary Azar and FDA Commissioner Hahn asking them to consider using human challenge trials to speed up a vaccine. The letter, which is worth reading in its entirety, is here: https://foster.house.gov/hhs-fda.
I believe it is too late to add signatures at this point, but consider calling your representatives to alert this to this effort and to ask them to support it.