While Jess and Nick are explaining to each other why they would never work out as a couple Nick exclaims his defense of why he only leaves nickels in tip jars by stating it is the only American currency Thomas Jefferson graces with his presence. (Which is not true he also appears on the 2 dollar bill still in circulation).
Pretending to be a Romney to get laid is quite a dumb scheme on Schmidt's part, as the Romneys are LDS (Mormon), and Mormons abstain from sex until marriage.