Canada's Bill C-3, an amendment to the Citizenship Act, removed the first-generation limit for Canadians born abroad to pass citizenship to their children. This change has prompted questions about potential future reversals and the security of acquired citizenship status. A lawyer states that while laws can change, citizenship already acquired under Bill C-3 should not be viewed as temporary or conditional.

Misconceptions have circulated among prospective applicants since Canada’s Bill C-3 came into effect. This amendment to Canada's Citizenship Act removes the first-generation limit previously barring Canadians born abroad from passing citizenship to their children also born outside Canada. It also introduces a 1,095-day substantial connection requirement for children born on or after December 15, 2025. For readers pursuing citizenship by descent, this means a wider group of applicants is now eligible to claim Canadian citizenship.

Bill C-3 came into effect on December 15, 2025, becoming part of Canada’s Citizenship Act. This legislation provides the basis of Canadian citizenship for people born before that date who became citizens because of the amendments. In June 2026, Immigration, Refugees and Citizenship Canada, IRCC, issued surrender letters to some applicants, asking them to return previously issued citizenship certificates and paused the finalization of new proof of citizenship applications.

At the same time, the department updated documentation standards, tightening requirements around original source authority and specifying that every generation in a descent chain must be documented. By the end of June, IRCC announced it had completed a broader review and resumed processing, stating that only 1% of all applicants with issued certificates were impacted.

The question about Bill C-3 reversal did not emerge in a vacuum. Canada previously changed citizenship by descent rules, including introducing the first-generation limit in 2009. The combination of paused applications, letters asking for documents back, and new evidentiary requirements from IRCC in June 2026 made Canada’s citizenship by descent application process seem volatile for some.

A lawyer stated that technically, Parliament can always pass new legislation and change citizenship laws going forward. However, this is very different from saying that citizenship already acquired under C-3 would simply be cancelled if a future government decided to reintroduce a generational limit. The lawyer also noted that when Canada previously changed citizenship by descent rules, the legislation did not simply take citizenship away from people who were already Canadian citizens.

The lawyer concluded that citizenship obtained under Bill C-3 should not be viewed as temporary or conditional. The lawyer also stated that it is not simply a matter of IRCC deciding one day to cancel a valid citizenship certificate because the political climate has changed.

Since the passing of Bill C-3, tens of thousands of Americans are now considered Canadian citizens by descent, becoming dual US Canadian citizens. They retain their American passport and citizenship while enjoying benefits such as the ability to freely live, work, and travel in Canada, and apply for a Canadian passport. Their children may be able to study in Canada without a study permit.

Canadian citizens generally aged 18 to 35 may be able to apply through youth mobility arrangements with more than 35 countries and territories, subject to each destination’s eligibility rules. Getting a Canadian citizenship certificate alone does not trigger new taxes, as Canada taxes are based on residency. An American who gains dual citizenship but does not move to Canada or have Canadian income will not owe Canadian income tax. If an American settles in Canada as a tax resident, they will navigate both systems, but the US Canada tax treaty can provide some relief.

To amend the Citizenship Act, the government would have to introduce a bill in the House of Commons or Senate, then pass it through both. This includes a First Reading, Second Reading, Committee study, Report Stage, and Third Reading. Once both chambers pass the bill, it goes to the Governor General for Royal Assent, becoming law. This is a long drawn out process that is unlikely to happen on an expedited timeline and without notice to applicants.

If individuals think they may be Canadian citizens by descent, the first step is to speak to their oldest surviving relatives about ancestry. If they have an ancestor born in Canada, they qualify thanks to Canada’s birthright citizenship laws, but ancestry alone does not establish citizenship, and every generational link and relevant ancestor’s status must be documented.

Bill C-3 has expanded eligibility for Canadian citizenship by descent, and while future legislative changes are possible, citizenship already acquired under the current law is considered secure. Revocation of citizenship occurs only under specific legal factors such as fraud or misrepresentation, not due to political changes.