Mitch McConnell should step down as Senate minority leader after freezing, GOP senator says

Questions remain around mental fitness of Republican Senate leader, 81, after health scare in public earlier this week

Mitch McConnell, the 81-year-old Republican leader in the US Senate who suffered a public health scare this week, should step down from the role he has filled since 2007, an unnamed GOP senator said.

McConnell, from Kentucky, remains intellectually sharp" on a whole host of issues including baseball", the anonymous senator told NBC News.

Reuters contributed to this report