Republican National Committee Chairman Reince Priebus is among a handful of high-profile Republicans considering whether to confront Donald Trump about his approach to his presidential campaign.

That's according to a Republican official with direct knowledge of Priebus' 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 Tuesday refusal to endorse House Speaker Paul Ryan's re-election.

Priebus and Ryan are both from Wisconsin and close friends.

The official says Priebus may join a small group of well-respected Republicans to confront Trump in the coming days. The plan is not final, but the official says the group may include former House Speaker Newt Gingrich and former New York Mayor Rudy Giuliani. Both are Trump allies.

Priebus has already been speaking with campaign chairman Paul Manafort and the billionaire's children, who are said to agree that Trump needs to stop picking fights within his own party and back off his criticism of the family of a slain soldier. (Associated Press)