The economy's heading towards recession, the US government's bailing out lenders and nationalisation is back in vogue again. It's hardly capitalism's finest hour! But if American mortgage giants like Fannie Mae and Freddie Mac are good enough to be nationalised, then why not British lenders? If banks can't regulate themselves, then why shouldn't the state run them instead? It's something MPs on the Treasury Select Committee have been calling for recently, but is it right that taxpayers should have to expose themselves to such risks? Graham Stewart takes your calls, texts and emails.