As detailed last month, IO Interactive is currently re-rolling their roster of elusive targets for Hitman. The second target, The Congressman — also known as Anthony L. Troutt — will be seen in Sapienza for 10 days.
In Hitman's elusive target missions, you only get a single chance to assassinate a target. If you die, fail or complete the mission you won't be able to play it again. Successfully completing it may reward you with a cosmetic suit for Agent 47 to wear, depending on how many you have killed and what method you used.
If you didn't play The Congressman contract when it appeared last time, you'll be able to go in-game and try from now until the 11th of December.