The Washington Post’s Ed O’Keefe and David A. Fahrenthold share an interesting detail about the background checks compromise reached by Sen. Joe Manchin D-W.V. yesterday.

For Manchin, that agreement was the payoff from months of relationship-building with Republicans, including nights of pizza and beer on a senator-stuffed boat called the Black Tie. The final deal was worked out over the past week, and concluded late Tuesday with a huddle at a rooftop birthday party for TV host Joe Scarborough.

There, Sen. Charles E. Schumer (D-N.Y.) agreed to support the proposal — but to skip the news conference so his enemies would not become the bill’s enemies.