His emphatic speech may have backfired, but former Massachusetts Gov. Mitt Romney is still lending his voice to the GOP's anti-Trump crusade. The 2012 Republican presidential nominee has recorded robocalls on behalf of Sen. Marco Rubio and Ohio Gov. John Kasich, urging voters to essentially cast their ballots for anyone but Donald Trump.

"If we Republicans were to choose Donald Trump as our nominee, I believe that the prospects for a safe and prosperous future would be greatly diminished," Romney says on the recording, adding that he believes Trump would also lose the general election to Democratic frontrunner Hillary Clinton in November. The calls for Kasich and Rubio, which follow nearly identical scripts, were released Tuesday morning to the four states voting in GOP contests: Michigan, Mississippi, Idaho, and Hawaii.

A Romney spokeswoman told The Washington Post in an email that the former governor offered to help Rubio, Kasich, and Sen. Ted Cruz "in any way he can," as the three fight to deny Trump the party's nomination. Romney has not, however, issued an official endorsement for any one candidate. Kimberly Alters

When it comes to global security, Sen. John McCain (R-Ariz.) argues that Russian President Vladimir Putin poses a larger threat than the Islamic State.

"I think [Putin] is the premier and most important threat, more so than ISIS," he told the Australian Broadcasting Corporation on Monday, before he headed to Singapore for a defense summit. Russia continues to meddle in elections, most recently in France, McCain said, and because of that he views Russia as "the far greatest challenge that we have. So, we need to have increased sanctions and hopefully when we come back from our recess, the Senate will move forward with sanctions on Russia and enact other penalties for Russian behavior."

He also briefly touched on President Trump's national security team, and the strategy they are putting together for Afghanistan. "I do believe that most of the time he accepts their advice and counsel," McCain said. "Can I tell you that he does all the time? No. And does it bother me? Yes, it bothers me." Catherine Garcia

Armed with water, brushes, and environmentally safe cleaning solution, Andrew Lumish spends every Sunday at Woodlawn Cemetery in Tampa, cleaning the gravestones of veterans who fought in conflicts from the Civil War to Vietnam.

"It's pretty messy, pretty dirty," he told WUSF. "We're pulling out dirt and biological material that's been here since 1921. So, a lot of elbow grease here." Lumish says that over the last five years, he's cleaned about 600 gravestones, with some covered in so much mold and mildew it was impossible to read the names. It all started when Lumish, a history buff, was at another cemetery taking photos, and saw how the gravestones of some veterans were in complete disrepair. Because he owns his own cleaning company, Lumish decided he would give back by bringing new life to the gravestones.

It takes Lumish anywhere from four days to four months to finish cleaning a gravestone; it's easier when a stone is made of marble or granite and the dirt stays on the surface, rather than limestone and sandstone, which are porous. Lumish uses genealogy websites and records at the library stretching back to the 1800s to get information on the veterans, and he posts what he learns on a Facebook page called Good Cemeterian. He's also inspired others, now serving as a consultant and helping Potter County in Pennsylvania clean its own veterans' tombstones. "We uncover heroes," Lumish said. "They were not considered heroes of their day, so I hope that some of the stories that I tell make people appreciate the men and women that serve currently. There are heroes today that surround us on a daily basis." Catherine Garcia

A car bomb that exploded in central Baghdad early Tuesday killed at least 10 people and left 40 wounded, Iraqi officials said.

Police Maj. Ali Mohammed told CNN the explosion took place in "the busy al Hurriya Square," and an interior ministry spokesman said the car bomb detonated outside an ice cream shop. The Islamic State has claimed responsibility, saying they were targeting Shiite Muslims. Islam's holy month of Ramadan began on Friday, and families often are out late during the month, breaking their daily fast. Catherine Garcia

Golf great Tiger Woods said Monday night he is taking "full responsibility" for the actions that led to him being arrested on suspicion of driving under the influence early Monday morning in Jupiter, Florida.

In a statement, Woods, 41, said he understood the "severity" of what happened, but wanted the "public to know that alcohol was not involved. What happened was an unexpected reaction to prescribed medications. I didn't realize the mix of medications had affected me so strongly." Woods went on to apologize to his "family, friends, and the fans. I expect more from myself, too. I will do everything in my power to ensure this never happens again." Catherine Garcia

A sportswriter for The Denver Post was fired Monday after he sent what the newspaper called a "disrespectful and unacceptable" tweet about the winner of the Indianapolis 500.

Following Takuma Sato's win on Sunday, sporstwriter Terry Frei tweeted: "Nothing specifically personal, but I am very uncomfortable with a Japanese driver winning the Indianapolis 500 during Memorial Day weekend." Not long after he posted his message, Frei deleted it. He followed up with an apology to Sato and those who were offended by his tweet. "I made a stupid reference, during an emotional weekend, to one of the nations that we fought in World War II — and, in this case, the specific one my father fought against," he said, later adding he was "angry" at himself because "there was no constructive purpose in saying it and I should not have said it, especially because The Denver Post has been dragged into this."

It wasn't enough, and on Monday morning, The Post's Mac Tully and Lee Ann Colacioppo released a statement saying Frei was no longer an employee and they were sorry for his "disrespectful and unacceptable" tweet. Catherine Garcia

A Republican member of the Texas House of Representatives who called Immigration and Customs Enforcement on protesters gathered at the Capitol Monday said he threatened to shoot one of his colleagues after he promised to "get" him.

The protesters were speaking out against State Bill 4, which requires that cities and counties in Texas go along with federal immigration authorities who ask they detain people suspected of living in the U.S. without proper documentation; critics are afraid this will lead to racial profiling. After the demonstrators began to chant and unfurl banners, security officers arrived and eventually started to remove them from the gallery. State Rep. Matt Rinaldi (R-Irving) said he "took issues" with Democrats "bragging about how great it was and they were inciting them to break the House rules and break Texas law." He said he saw signs stating the protesters were not legal residents, so he decided to call ICE.

"Matt Rinaldi gave the perfect example of why there's a problem with SB 4," state Rep Ramon Romero (D-Fort Worth) said. "Matt Rinaldi looked into the gallery and saw Hispanic people and automatically assumed they were undocumented. He racially profiled every single person that was in the gallery today. He created the scenario that so many of us fear." State Rep. César Blanco (D-El Paso) said Rinaldi came up to a group of Democrats and said he "just called ICE to have all these people deported," while state Rep. Ramon Romero (D-Fort Worth) said Rinaldi declared, "I called ICE — f—k them," before turning to another lawmaker and yelling, "F—k you" to "the point where spit was" flying in their faces.

Rinaldi claimed on Twitter that state Rep. Poncho Nevárez (D-Eagle Pass) "threatened my life on the House floor" and said "he would 'get me.' I made it clear that if he attempted to, in his words, 'get me,' I would shoot him in self-defense." Nevárez told The Texas Tribune he put his hands on Rinaldi to tell him to take his argument outside the chamber, but he never threatened to hurt him. Later, Nevárez tweeted that Rinaldi is a "liar and hateful man. Got no use for him. God bless him."Catherine Garcia

On Friday, a 35-year-old apparent racial extremist named Jeremy Christian allegedly stabbed three people on a light-rail train in Portland, killing two of them, after they interceded to stop Christian from harassing two teenage girls with dark skin, one apparently in a hijab. On Saturday, about 1,000 people gathered in Portland to honor the three men who intervened: Taliesin Myrddin Namkai Meche, 23, a recent graduate of Reed College, and Rick Best, 53, an Army veteran, both of whom died; and David-Cole Fletcher, 21, who survived.

"They didn't have capes," local activist Ellie Eaton said at the vigil. "They were just human beings that we all have the capacity to be like." On Monday, President Trump called the attack "unacceptable," and said the "victims were standing up to hate and intolerance," in a tweet from his official POTUS account:

On Saturday, one of the girls targeted on the MAX train told a local TV station that she is not a Muslim and that the people who stood up for her were heroes. "I just want to say thank you to the people who put their life on the line for me, because they didn't even know me and they lost their lives because of me and my friend and the way we look," she said. "And I just want to say thank you to them and their family and that I appreciate them because without them, we probably would be dead right now."

Christian has been charged with two counts of aggravated murder and may face more when he is arraigned on Tuesday. Peter Weber