UPDATE 1-U.S. Senate leaders aim to craft 'fiscal cliff' bill by Sunday
December 28, 2012 at 18:12 PM EST
WASHINGTON, Dec 28 (Reuters) - U.S. Senate leaders are working to craft legislation by Sunday that averts the year-end "fiscal cliff" of tax hikes and spending cuts, but many details needed to be worked out after a crucial meeting with President Barack Obama on Friday.