Sen. Thom Tillis (R-N.C.) on Tuesday pushed back against concerns about Senate Minority Leader Mitch McConnell's cognitive health, asserting that the Kentucky Republican's mind remains sharp despite his recent physical struggles.

"The difference between the Biden situation and the Mitch situation is I've had conversations with Mitch," Tillis told MS NOW's Peter Alexander on "State of Play," referring to former President Biden, who faced similar questions about age and fitness for office.

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"That man's brain is as sharp as it ever was," Tillis added. "His body's failing him because he's had a lifelong struggle with polio. Now, people are telling me, when I can have a coherent discussion with him โ€” I met with him a week or so, a couple of weeks ago โ€” 'Mitch, how are you doing?' He spent probably less than 30 seconds talking about that, and he immediately jumped to, 'What are we going to do to help Ukraine?' 'What are we going to do to save the Senate and keep the filibuster?'"

McConnell, 84, returned to the Senate last month to cast his first vote since mid-June, following a fall at his home that kept him away from Capitol Hill for months. His prolonged absence and the limited updates from his office fueled speculation about his health and whether he would resume his duties before his term ends next year.

The episode has reignited debates about age and tenure in Congress, with polls showing broad public support for term limits. McConnell, first elected to the Senate in 1985, is among the longest-serving senators in U.S. history and has announced he will not seek reelection.

Tillis's remarks come as Republicans navigate internal tensions over leadership and strategy. The North Carolina senator has been a vocal supporter of McConnell, even as some in the GOP have called for new leadership. This defense also follows Tillis's recent endorsement of a candidate in his state's open Senate race, a move that underscores his alignment with the party establishment.

McConnell's health has been a recurring topic in Washington, with some questioning whether he can effectively lead the conference. However, Tillis's firsthand account offers a counterpoint to those doubts, emphasizing the minority leader's continued focus on key legislative priorities.

The contrast with Biden is notable, as Tillis suggests that personal interaction provides clarity that public appearances may not. "I've had conversations with Mitch," he reiterated, signaling his confidence in McConnell's abilities.