The Republican National Committee meets this week in Florida -- the final gathering of party leaders before their big presidential nominating convention this summer.
Usually, the GOP leaders begin getting rules ready for the convention -- a draft or template for the official Rules Committee to discuss -- when it meets the week before the convention.
But this is not a normal year -- the nomination battle is still contested, and Trump -- the front-runner -- is complaining that in his view, the party leadership is trying to rig things to deny him the nomination.
Given that climate of mistrust, The Atlantic's Molly Ball says RNC Chairman Reince Priebus thinks it is best to leave the rules deliberations for later.
"This year, given how much heat there is on the process, Reince is telling them lay off. 'We don't want to seem like we're putting a thumb on the scale.' However, the RNC knows no matter what happens, they're going to get blamed."
2) Trump's new right-hand man is a convention veteran -- but this is new ground
CNN is told that Trump's new convention strategist, Paul Manafort, is planning to attend the RNC meeting.
It's a dual mission: to represent Trump's interests in any convention-related conversations, and to discuss a potential fall campaign with party leaders from key battleground states.
Manafort is no stranger to RNC business. He worked his first convention in 1976, and was a friend and ally of Lee Atwater, a legendary South Carolina political strategist who was RNC chairman back in the George H.W. Bush administration.
But that was a long time ago. Manafort is less familiar with the current GOP leadership team. And his candidate has added to the diplomatic challenge in recent days by accusing the RNC of being "dirty tricksters" running a "rigged system."
3) Cruz braces for a tough April -- and hopes for a May rebound
Cruz in on a roll of late -- winning new delegates at state and county GOP conventions, including 14 in Wyoming this weekend.
But that success seems like small potatoes given the states ahead: 95 delegates in New York on Tuesday and then 172 more as the April calendar winds through Connecticut, Rhode Island, Pennsylvania, Delaware and Maryland.
Jonathan Martin of The New York Times says that the April map is hardly Cruz country -- though he says the senator from Texas aims to win a few targeted delegates and then hope for a better May.
"The Ted Cruz campaign is looking past New York to Maryland and Pennsylvania the following week ... but for Ted Cruz's campaign, April can't end soon enough," Martin says. "They want to get to May and especially Indiana and Nebraska."
4) The Supreme Court considers immigration -- with election drama
The Supreme Court vacancy is already a dividing line in the 2016 presidential campaign -- and now a big immigration case is coming before the justices.
At issue: executive actions President Barack Obama took in an effort to implement some of his immigration priorities after the Republican Congress made clear it would not entertain the White House ideas.
It's a giant policy issue -- and a big political issue as well. Cameras are not allowed inside the Supreme Court, but Ed O'Keefe of The Washington Post noted the major Spanish-language networks are planning special coverage.
"If the eight-member court rules in favor, the program can be implemented. If it's a tie or they rule against it, the program is blocked from being implemented before the president takes off -- or before he leaves office," O'Keefe says. "But it's a reminder that the next person who takes office still has to deal with immigration in a big way."
5) Obama heads to Saudi Arabia -- with a congressional bill in the balance
Obama is visiting Saudi Arabia this week, and he hopes to focus on the war against ISIS and the Iran nuclear deal. But there is another thorny issue front and center: whether the kingdom can be sued in U.S. courts in connection with the 9/11 attacks.
The Saudi government is warning it will sell off billions in U.S. assets if Congress moves such legislation close to passage.
The issue is sure to come up when Obama meets with King Salman. CNN's Nia-Malika Henderson suggests the debate is likely to spill over into the 2016 presidential campaign as well.
"It will be interesting to see if this works its way into the presidential contest with the focus on New York next week with these candidates taking very odd positions on foreign policy over these last weeks," she says.