New Delhi, February 15: Former Law Minister Ashwani Kumar on Tuesday resigned from the Congress, ending his 46-year-long association with the grand old party. Kumar sent his resignation to Congress President Sonia Gandhi this morning, saying he can best serve national causes outside the party fold. "Having given my thoughtful consideration to the matter, I have concluded that in the present circumstances and consistent with my dignity, I can best subserve larger national causes outside the party fold," Kumar said in his resignation letter. "I am accordingly quitting the party...