Congress President Sonia Gandhi is expected to appear before the Enforcement Directorate (ED) Tuesday for her second round of questioning in the money laundering case linked to the National Herald newspaper. The 75-five-year old Gandhi was questioned for over two hours during her first day of questioning in the case on July 21 where she replied to 28 questions put forth by the agency, that is probing alleged financial irregularities in the Congress-promoted Young Indian Private Limited, which owns the National Herald newspaper.