The book was used in the evidence that he presented to the Aliens Commission in its inquiries. This eventually resulted in the Aliens Act 1905 which placed restrictions on Eastern European immigration, although discussion of the Bill in Parliament provoked considerable opposition. Winston Churchill was MP for Manchester North West, where one third of his constituents were Jewish. Like his father Lord Randolph Churchill, Churchill bucked the trend of widespread antisemitism in the British upper classes, and actively opposed the Aliens Bill. In an open letter to Nathan Laski (a prominent member of the Jewish community in his constituency and father of Harold Laski), Churchill quoted a speech by Lord Rothschild, a Liberal supporter and member of the Aliens Commission:"The Bill introduced into the House of Commons proposes to establish in this country a loathsome system of police interference and espionage, of passports and arbitrary power exercised by police officers who in all probability will not understand the language of those upon whom they are called to sit in judgement. This is all contrary to the recommendations proposed by the Royal Commission. [...] The whole bill looks like an attempt on the part of the Government to gratify a small but noisy section of their own supporters and to purchase a little popularity in the constituencies by dealing harshly with a number of unfortunate aliens who have no votes."