Veto veto ("withholding Royal Assent") was last exercised in 1708 by Queen Anne with the Scottish Militia Bill 1708. The House of Lords used to have an effective power of veto by refusing to concur in bills adopted by the House of Commons. However, reform first by a Liberal government and then by a Labour government has limited its powers. The Parliament Acts of 1911 and 1949 reduced its powers: they can now only amend and delay legislation. They can delay legislation for up to one year. Under the 1911 Act, money bills (those concerning finance) cannot be delayed, and under
Liberum veto 1763, about 150 Sejms where held, of which 53 failed to pass any legislation. Historian Jacek Jędruch notes that out of the 53 disrupted Sejms, 32 were disrupted by the "liberum veto". The 18th century saw an institution known as a "confederated sejm" evolve. It was a parliament session that operated under the rules of a confederation. Its primary purpose was to avoid disruption by the "liberum veto", unlike the national Sejm, which was being paralyzed by the veto. On some occasions, a confederated sejm was formed of the whole membership of the national Sejm so that the "liberum veto"