 Alexander sponsored Bill C-24, the Strengthening Canadian Citizenship Act, which changed the residency requirements for gaining citizenship to reduce the number of what the party called "Canadians of convenience" with weak bonds to the country.The bill also allowed the Citizenship and Immigration Minister to revoke Canadian citizenship from dual citizens convicted of treason, espionage, or terrorism charges as well as those who engaged in armed conflict against Canada, which effectively created a two-tier Canadian citizenship.Alexander's time in office was marked by what a number of commentators described as a surprisingly adversarial approach to politics, in contrast with the expectation of some that he would be a moderate figure.