Play of the Day: The GOP Field Visits Iowa

Some make pig puns, Carson checks his watch and Fiorina wants Clinton to ride a tractor, for some reason.

A federal court ruled recently that the United States Postal Service cannot continue the emergency price increase system that has been in place since 2014. Conan O'Brien cited the news Monday night, joking that the news will only affect a few people.

Over the weekend, candidates vying for the 2016 Republican presidential nomination attended Iowa Senator -- and famed hog castrator -- Joni Ernst's Roast and Ride, a motorcycle ride and barbecue. The contenders pandered to Iowans by referencing pork and farming, while also committing some gaffes. The Daily Show highlighted the overly folksy way they spoke to the crowds, while Late Night's Seth Meyers noticed that Carly Fiorina, for some reason, wants bring up tractors at a general election with debate Hillary Clinton.