Trump touted his fulfilled promises during a Pennsylvania rally on Saturday night, and the media responded by pointing out his still-unkept promises — repealing Obamacare, renegotiating NAFTA, building the wall, etc. But it's important to remember that many U.S. presidents have a long history of making daring promises to win an election, but not always following through.
Why it matters: Trump has only been in the White House a little more than 100 days. Despite his confidence and often-repeated big promises, fulfilling all of them in that time frame is a big ask. And if he does end up breaking some of his campaign promises, he won't be the first POTUS to do so. Promises are used to win elections, and sometimes are actually best unfulfilled.