The Obama administration joined forces with Fed chairman Ben Bernanke on Tuesday to press Congress for powers that would enable regulators to seize control of troubled financial groups including “non-banks” such as insurer AIG. In a rare joint appearance before a House committee, Bernanke and Tim Geithner, Treasury secretary, also called for an oversight body to monitor risky financial institutions. Geithner is to announce more details of regulatory plans at another hearing on Thursday. Read the testimonies here and here.