Argo Group International Holdings Ltd has named Jeff Grange executive vice-president for US operations.The Bermudian-based re/insurer said Mr Grange will responsible for US claims and lead the Argo Casualty, Argo Pro, Argo Insurance, Rockwood and Argo Cyber businesses.Mr Grange was previously president of specialty and commercial insurance and global head of trade credit and surety business at New York-based QBE North America, a division of Sydney-based QBE Insurance Group Ltd.