Republican National Committee Chairman Reince PriebusReinhold (Reince) Richard PriebusOvernight Defense: Inside the 3B House defense policy bill | Senators take new tack to challenge Saudi arms sales | Raytheon, United Technologies to merge Former Trump chief of staff Reince Priebus officially joins Navy The Hill's 12:30 Report - Presented by MAPRx - Nadler gets breakthrough deal with DOJ on Mueller docs MORE says former Secretary of State Hillary ClintonHillary Diane Rodham ClintonThe Hill's Morning Report - Crunch time arrives for 2020 Dems with debates on deck The Memo: All eyes on faltering Biden ahead of first debate Trump says he's not prepared to lose in 2020 MORE should be prepared to answer questions about her health if she wants to run for president in 2016.

Her “health and age is fair game,” Priebus said during an appearance on NBC’s “Meet the Press” on Sunday.

Last week, Republican strategist Karl Rove said Clinton’s 2012 head injury should be a factor in determining whether she runs for president in 2016.

People asked similar questions of President Ronald Reagan and Sen. John McCain (R-Ariz.) when they ran for president, so asking those questions of Clinton is fair, Priebus said Sunday.

He declined to speculate on the condition of Clinton’s health.

“I’m not a doctor. What I do know is that the issue is going to come up,” he said.

Priebus pushed back on the idea that Republicans are using questions about her health and age to keep Clinton from running.

“It’s not the mission,” he said.