. >> cantor: i call her "mumma b." her name is barbara. >> stahl: your mother-in-law lives with you? >> cantor: absolutely. absolutely. we couldn't do it without her. >> stahl: obama, the president has the same thing. >> diana cantor: yeah. ( laughs ) yes. >> stahl: you actually have a connection. >> cantor: right. >> diana cantor: we do. we talk about that a lot, actually. yeah. >> stahl: have you talked with... does the president know? >> cantor: yeah. >> diana cantor: yes, yes. >> cantor: uh-huh. >> stahl: when they met, diana was working at goldman sachs in new york. she still works in finance as a partner at an investment management firm. >> mumma b: when i met eric, i saw that it's good to be republican, too. >> cantor: there you go. >> stahl: both his mother-in-law and his wife were liberal democrats, and while they have converted to the republican party, their beliefs don't always jibe with the congressman's. so you're pro-choice? >> diana cantor: i am. >> stahl: gay marriage? what does that mean? >> diana cant