Republicans’ economic proposals are inflexible, insincere, selfish and motivated by the pursuit of partisan advantage rather than by a concern for Americans, according to President Barack Obama’s statements to an international press conference at the G-20 meeting Friday morning. “As soon as I get some signal from Congress that they’re willing to take their responsibilities seriously, I think we can do more [for the economy], but that is going to require them to break out of the rigid ideological positions they’ve been taking,” he told the assembled media in Cannes, France.