Begusarai: Union minister and Begusarai MP Giriraj Singh on Wednesday hit back at Congress neta Rahul Gandhi for his challenge to Prime Minister Narendra Modi to engage with him in an open debate.“Rahul Gandhi accuses BJP of ‘vote chori’ but fails to produce any document in support of his claims in Supreme Court. His accusations against the Election Commission lack any fact and so weak that even an ordinary BJP worker could debate with him and silence him,” he said.The Union minister asked Rahul Gandhi to accept the challenge offered by Union home minister Amit Shah to debate the SIR issue in Parliament. He accused the Congress leader of trying to defame various constitutional institutions and hatching a conspiracy to create anarchy.