*Correction appended. Increasing calls from some Democrats for U.S. Supreme Court Justice Sonia Sotomayor to retire because of her age and diabetes diagnosis are biased and misguided, according to disability leaders who say she’s more than up to the job. For months — particularly with the November election approaching — left-leaning commentators like former MSNBC host Mehdi Hasan have expressed concern that because Sotomayor is 69 years old and has type 1 diabetes, she may need to be replaced...