Donald Trump is widely expected to win Nevada's Republican caucus on Tuesday, even though he's a little fuzzy on the rules. "What the hell is caucus?" he asked an estimated 8,000 supporters at a rally in Las Vegas on Monday night. "Nobody even knows what it means." And nobody really has any idea who will turn up to vote, thanks to sparse polling, Nevada's unpredictable electorate, and questions over where Jeb Bush's voters will land. Marco Rubio, who lived in Nevada for a spell as a child — when his family briefly converted to Mormonism — has been working to court the organized Mormon and moderate Republican votes, while Ted Cruz has been heavily courting evangelical Christians and people opposed to federal ownership of public lands.

And it wouldn't take many of those voters to push Rubio or Cruz to an upset victory over Trump, says Philip Rucker at The Washington Post. "Just 20,000 voters could be enough for a landslide, operatives here say," meaning that for either candidate, "a win is within reach." Nevada has 434,000 registered Republican voters. So as Nevada Lt. Gov. Mark Hutchison, Rubio's state campaign chairman, said at a Rubio rally Sunday night: "If we get our people out, we’re going to do great. If we don’t get our people out, we're not going to do so great." Peter Weber

The Trump administration released a plan Saturday night to reunite migrant families who were separated before President Trump signed his executive order reversing his own policy of splitting up children and parents at the border.

The plan ties reunification to deportation proceedings: Parents will have to request their children share the result of their deportation hearings. Once the process is complete, the children will either be deported with their parents or, if the family is permitted to stay in the U.S., parents can apply to sponsor their children upon release.

Some parents may not elect to use this process to protect their children from violence in their home countries. It is unclear how many parents of separated children may have already been deported before this plan was implemented and how long this plan will take. Children awaiting the results of their parents' proceedings will remain in detention at least for several weeks.

Administration officials said 2,053 separated children remain in detention and their locations around the country are documented. Reunification will primarily happen at the Port Isabel Service Processing Center in Brownsville, Texas. Parents trying to determine if a child is held by the Department of Health and Human Services have been directed to contact the Office of Refugee Resettlement National Call Center at 1-800-203-7001 or information@ORRNCC.com. Bonnie Kristian

White House Press Secretary Sarah Huckabee Sanders on Friday became the third member of the Trump administration to have trouble dining out this week.

Senior policy adviser Stephen Miller was heckled while eating at a Mexican restaurant. Homeland Security Secretary Kirstjen Nielsen left a different Mexican establishment after about a dozen protesters surrounded her table yelling "shame." And Sanders was asked to leave a Virginia restaurant by its owner.

The incident was first noted online by a social media user claiming to have been her server and later confirmed by Sanders herself:

Since the story broke, The Red Hen's Facebook and Yelp pages have been flooded with predictably political reviews both for and against the owner's decision. "I live in the Midwest and have already heard what you did to Mrs. Sanders and her party," wrote one reviewer. "What a total disgrace you are! Talk about Nazis!!"

"We reserve the right to refuse service to anyone," snarked another. "No shirt, no truth, no service..." Bonnie Kristian

Former Arkansas governor and presidential candidate Mike Huckabee posted a tweet Saturday morning in which he suggested House Minority Leader Nancy Pelosi (D-Calif.) is in league with the MS-13 gang, a favorite subject of President Trump and his allies when talking immigration policy:

Huckabee's comment appears to come in response to Pelosi's pushback on Trump's repeated use of the word "animals" to describe gang members: Pelosi said she believes the label is inappropriate because it ignores the basic human dignity and "spark of divinity" in every person. Trump has said this means she "loves MS-13."

The tweet promptly came under fire on Saturday:

As The Washington Post's Dave Weigel noted, the Democratic Congressional Campaign Committee is actually responsible for electing Democrats to the House, and its "chairman (Ben Ray Lujan) and executive director (Dan Sena) are both Hispanic." The president will be a guest on Huckabee's TV show Saturday night. Bonnie Kristian

Implementation of President Trump's hastily crafted executive order reversing his administration's policy of separating families at the border reportedly has the executive branch in chaos. "It was policy based on a PR-messaging impulse," light on detail and heavy on speed, a source familiar with administration discussions told Politico.

Trump originally wanted to make comprehensive immigration law by fiat, a Friday night Washington Post story says, but was told by government attorneys that was not possible (or, as one unnamed official put it, "a pretty insane idea"). He then demanded the order on family separation be crafted in less than one day to quell public uproar, a quick solution Politico reports has left the Departments of Homeland Security, Justice, and Defense unsure of how to proceed.

Especially uncertain, says ABC News, is how to reunite families already separated. All migrant children in the care of Customs and Border Protection have been returned to their families, but up to 3,000 are still held by the Department of Health and Human Services, and some have been shipped clear across the country.

"It's devastating because I already know when I meet [clients] for the first time, and they start telling me that they are [a] parent, that I'm not gonna have the answers that they want in any time that they should have," Texas immigration lawyer Erik A. Henshaw told ABC. "I don't know if I'll find them during their case. I don't know if it'll happen when you get to immigration proceedings. I don't know if you're going to be deported or removed and have never actually found and/or had contact with your child." Bonnie Kristian

Katie Arrington, the South Carolina state representative who defeated Rep. Mark Sanford (R-S.C.) in his GOP primary race this month, has been seriously injured in a car crash, her campaign announced Saturday.

Arrington was riding with a friend when their vehicle was struck by another driver going the wrong way on the highway. The driver of the other car did not survive. Arrington is expected to remain hospitalized for several weeks to undergo multiple surgeries.

"My thoughts and prayers are with Representative Katie Arrington of South Carolina, including all of those involved in last nights car accident, and their families," President Trump tweeted Saturday morning. Bonnie Kristian

A.J. Baker, the adult son of Massachusetts Gov. Charlie Baker (R), has been accused of sexual assault by a woman who shared a flight with him Wednesday.

"On June 20, the crew of flight 1354 were notified of an incident between customers shortly before landing in Boston," said the airline, JetBlue. "The aircraft landed at approximately 11 p.m. local time where it was met by local authorities."

The "matter is being handled by the U.S. Attorney's Office," said Massachusetts State Police. Baker's attorneys said he "is fully cooperating and looks forward to a resolution of this matter." Bonnie Kristian

The Pentagon announced Friday it has come to an agreement with South Korea to indefinitely suspend two more joint training exercises. The two countries previously announced the suspension of "large-scale" military exercises following President Trump's promise to North Korean leader Kim Jong Un to stop "provocative, inappropriate, and expensive" war games.

"To support implementing the outcomes of the Singapore Summit, and in coordination with our Republic of Korea ally, Secretary Mattis has indefinitely suspended select exercises" that were scheduled for this summer, said chief Pentagon spokesperson Dana White.

"This includes suspending Freedom Guardian, along with two Korean Marine Exchange Program training exercises scheduled to occur in the next three months," she continued. "In support of upcoming diplomatic negotiations led by Secretary Pompeo, additional decisions will depend upon the DPRK [North Korea] continuing to have productive negotiations in good faith." Bonnie Kristian