Tamil Nadu chief minister MK Stalin is to go to the U.S. on an official trip to attract investments to the state. Also, he will undergo medical tests and health evaluation when he is there. As the CM wishes to hoist the flag on Independence Day at Fort St George, his departure has been planned for around August 18 or later. But before then he must take a decision on the appointment of a deputy CM who will preside over cabinet meetings in his absence that could stretch to a couple of weeks if any therapy is needed in the U.S. The party has left it to him to nominate a deputy CM or a senior minister to preside over the cabinet. But it is on the cards that the CM will name his son Udhayanidhi as the Deputy CM, a decision that could have been taken much earlier but was postponed due to a few murmurings among party seniors and loyalists. Now that there is a need to name someone, Stalin may take the opportunity to make his son his deputy and open a path for him to be his political heir to head the party. Stalin has been under more pressure from within his family to take the call to make Udhayanidhi the Deputy CM than from his party.