Believing in Baltimore, Sal Choudhary wants to turn more renters into homeowners

I wasn’t kidding last year when I suggested that billionaire Michael Bloomberg invest $500 million in the acquisition, renovation and sale of 5,000 vacant houses in Baltimore. Someone — perhaps a classmate from his undergraduate days at Hopkins, maybe someone in City Hall — needs to invite him to do it. Bloomberg is an original member of The Giving Pledge, the commitment he, Bill Gates, Warren Buffett and other wealthy Americans made 10 years ago to give at least half of their fortunes to worthy causes.