A fresh attempt is to be made to reform a 308-year-old law which bars the monarch from marrying a Catholic. Liberal Democrat MP Evan Harris will present a bill to parliament in a bid to change the Act of Settlement. He also wants to end the discrimination against female heirs to the throne, but his bill does not alter the requirement for the monarch to be a Protestant. There have already been several bids to reform the law on the grounds it is outdated and discriminatory. The 1701 Act of Settlement states that only the Protestant heirs of Sophia, granddaughter of James I, can become King or Queen.