Mike Pence's endorsement of Paul Ryan is a break with Trump
Republican presidential nominee draws criticism from party over his recent comments
Donald Trump's running mate Mike Pence is breaking with the Republican presidential nominee by endorsing House Speaker Paul Ryan in his primary fight.
Pence said in a phone interview Wednesday with Fox News Channel that he's pleased to endorse Ryan.
The move comes a day after Trump said in an interview that he's "just not quite there yet" when it comes to backing Ryan, who has at times been critical of Trump's most controversial comments.
Pence says that he spoke with Trump Wednesday morning about his "support for Paul Ryan and our longtime friendship."
Meanwhile, Scott Walker's campaign says the Republican governor of Wisconsin won't join Trump at a Green Bay campaign stop on Friday.
Walker says he'll be visiting northern Wisconsin then, meeting with residents and local officials recovering from flash flooding last month. The campaign says Walker will join Trump at future events if they don't interfere with his work in Wisconsin.
Sen. Ron Johnson, a Wisconsin Republican, also says he won't attend the Trump event, citing a scheduling conflict.
Johnson, who is running for re-election, has criticized Trump's actions in a dispute with the family of slain U.S. Army Capt. Humayun Khan, but continues to support him for president.
Prominent Republicans criticize Trump
Trump's actions and statements are drawing fire from other prominent members of his party.
Republican National Committee chair Reince Priebus is among a handful of high-profile Republicans considering whether to confront Trump about his approach to his presidential campaign.
That's according to a Republican official with direct knowledge of Priebus's plans, who spoke on the condition of anonymity to discuss internal party strategy.
Republicans inside and outside of Trump's campaign are brainstorming how to influence the brash billionaire after a series of startling statements, including his refusal to endorse Ryan.
Also, a leader of an overseas Republican group says she is growing concerned about Trump.
Jan Halper-Hayes, vice-president of Republicans Overseas, says "there is an element of him that truly is psychologically unbalanced."
Halper-Hayes has previously defended Trump and has said his temperament is suited to high office.
'Donald is out of control right now'
Halper-Hayes, author of Quiet Desperation: The Truth About Successful Men, told the BBC on Wednesday that "Donald is out of control right now and he's not listening to anyone."
But she said that "I think that there is some real concern about his behaviour right now. … It's something we need to watch very carefully."
But Trump's campaign chair says the candidate is in control and that reports of brewing anger over his inability to stay on message are overblown.
Paul Manafort says in an interview with Fox News Channel that "the candidate is in control of his campaign."
He adds that "the campaign is in very good shape" and blames Democratic rival Hillary Clinton for suggesting otherwise.
Trump raises $80 million in July
Trump's campaign says it raised $80 million in July to support his bid as well as the Republican Party.
The numbers mark a significant upswing since May, when Trump was badly outraised by Clinton. He now has $37 million cash-on-hand.
Trump is leaning on small donors to finance the bulk of his presidential run. He's also continuing to invest his own money into his campaign, contributing another $2 million last month.
Trump says there's "great unity" in his campaign — despite growing dissent and turmoil among his fellow Republicans.
Trump tweeted Wednesday that the campaign unity is "perhaps greater than ever before."