Questioning the authority of Haryana government over blocking the Shambhu border near Ambala, the Supreme Court on Friday asked the state government to clear the barricading where farmers have been camping since February 13. The Haryana government had set up barricades on the Ambala-New Delhi national highway in February after the Samyukta Kisan Morcha (Non-Political) and the Kisan Mazdoor Morcha announced that farmers would march to Delhi in support of various demands, including a legal guarantee of minimum support price (MSP) for crops.