Trump is no stranger to prenuptial agreements, considering his wealth, three marriages, and two divorces.
"It's a hard, painful, ugly tool," Trump said about the agreements, which lay out predetermined terms and benefits of a divorce. "Believe me, there's nothing fun about it. But there comes a time when you have to say, 'Darling, I think you're magnificent, and I care for you deeply, but if things don't work out, this is what you're going to get.'"
The contracts can include money, houses, or anything a future spouse deems valuable enough to protect. They can also be amended over the course of a marriage to match a spouse's growing wealth or growing family, and are often private until the terms shake out in a divorce settlement.
Trump's prenup with his second wife, Marla Maples, was largely designed to avoid the messy public fight he went through with his first divorce.
A copy of his prenuptial agreement with Maples that was obtained by Vanity Fair shows that Trump wasn't afraid to draw harsh lines in the sand in the event of a divorce, including cutting off child support payments if the child gets a job or joins the military, and barring the ex-spouse from publishing any details about the marriage.
Trump's personal wishes were likely honored by Melania, as Trump reportedly told gossip columnist Liz Smith that negotiations had gone smoothly, saying "The beautiful thing is that she agrees with it. She knows I have to have that."