Two days after an uneventful and friendly conference call with the Republican House conference, Donald Trump will attend the Senate GOP’s weekly policy lunch meeting. Will the president get so amicable a greeting? Despite Trump’s on-again friendship with the majority leader, Mitch McConnell, and his new golfing buddies Lindsey Graham and Rand Paul, the Senate Republican conference remains the more challenging of the two groups for the president to work with.

One recent high point is the Senate’s budget resolution, which passed on Friday with just one Republican defection (Rand Paul). But the 51-49 margin underscores just how narrow Trump’s path to success for his next legislative agenda items.