New Delhi, Sept. 24 -- Opposition parties have requested President Ram Nath Kovind not to give his assent to the contentious farm bills, and conveyed to him that their passage in Rajya Sabha was "unconstitutional", Congress leader Ghulam Nabi Azad said on Wednesday.

The government should have consulted all parties and farmer leaders before bringing the farm bills, Azad told reporters after meeting the President at the Rashtrapati Bhavan.

"The Constitution was undermined ...We have given a representation to President that the farm bills have been passed unconstitutionally and he should return these bills," Azad said.

The Farmer's Produce Trade and Commerce (Promotion and Facilitation) Bill, 2020, the Farmers (Empowerment and Protection) A...