Congress and BJP have issued whips to their party MPs asking them to be present in full strength in Rajya Sabha today. Congress's chief whip in the Upper House Satyabrat Chaturvedi said that a three-line whip has been issued by the Congress amidst a view within the party that the government may try to slip through some legislative measures.<br/><br/>Deputy leader of Congress in Rajya Sabha Anand Sharma said the party has acted as a matter of precaution since BJP has in the past slipped through certain legislative business in the other House, bypassing the Business Advisory Committee.<br/><br/>BJP also issued a whip asking all its members in Rajya Sabha to be present in the House today. Earlier yesterday, a number of ruling NDA MPs met Rajya Sabha Chairman Hamid Ansari and demanded action against Congress MPs causing disruptions. Several key legislations, including the one on Goods and Services Tax, which is a Constitution-amendment Bill, are held up due to impasse over Lalit Modi and Vyapam issues in Parliament.