India, Sept. 11 -- Trouble continues to brew for the Congress in Madhya Pradesh with Chief Minister Kamal Nath now in the line of fire as the Union Home Ministry has decided to re-open seven cases pertaining to the 1984 anti-Sikh riots. More than 3,000 Sikhs were burnt alive in Delhi after the assassination of then Prime Minister Indira Gandhi and Nath's alleged offence, which has also been testified by several eyewitnesses, was of giving shelter to five persons who were accused in one of those seven cases. It may not culminate in a harsh decision but could be enough to trouble a sitting Chief Minister. Besides, the wily politician that he is, Nath has been able to hold off his involvement in the case, mostly on the ground that there was ...