Amit Shah is the "biggest Kasab of all", Uttar Pradesh politician Mayawati said today, a day after the BJP chief clubbed her along with the Congress and the Samajwadi Party to come up with the acronym spelling out the name of the 26/11 terrorist. "The whole country knows that there is no bigger Kasab or terrorist than Amit Shah," Mayawati said while campaigning in Ambedkarnagar.