to enact legislation without the approval of the Reichstag. Meanwhile, the only remaining question for the Nazis was whether the Catholic Centre Party would support the Enabling Act in the Reichstag, thereby providing the majority required to ratify a law that amended the constitution. Hitler expressed his confidence to win over the centre's votes. Hitler is recorded at the Nuremberg Trials as being sure of eventual Centre Party Germany capitulation and thus rejecting of the DNVP's suggestions to "balance" the majority through further arrests, this time of Social Democrats. Hitler, however, assured his coalition partners that arrests would resume after the elections and, in fact, some 26 SPD Social Democrats were physically removed. After meeting with Centre leader Monsignor Ludwig Kaas and other Centre Trade Union leaders daily and denying them a substantial participation in the government, negotiation succeeded in respect of guarantees towards Catholic civil-servants and education issues. At the last internal Centre meeting prior to the debate on the Enabling Act, Kaas expressed no preference or suggestion on the vote, but as a way of mollifying opposition by Centre members to the granting of further powers to Hitler, Kaas somehow arranged for a letter of constitutional guarantee from Hitler himself prior to his voting with the centre en bloc in favour of the Enabling Act. This guarantee was not ultimately given. Kaas, the party's chairman since 1928, had strong connections to the Vatican Secretary of State, later Pope Pius XII. In return for pledging his support for the act, Kaas would use his connections with the Vatican to set in train and draft the Holy See's long desired Reichskonkordat with Germany (only possible with the co-operation of the Nazis). Ludwig Kaas is considered along with Papen as being one of the two most important political figures in the creation of the Nazi regime. Enabling Act negotiations On 20 March, negotiation began between Hitler and Frick on one side and the Catholic Centre Party (Zentrum) leaders—Kaas, Stegerwald, and Hackelsburger on the other. The aim was to settle on conditions under which Centre would vote in favour of the Enabling Act. Because of the Nazis' narrow majority in the Reichstag, Centre's support was necessary to receive the required two-thirds majority vote. On 22 March, the negotiations concluded; Hitler promised to continue the existence of the German states, agreed not to use the new grant of power to change the constitution,