How Bill C-3 changed Canadian citizenship through descent in December 2025

Bill C-3 came into effect in December 2025 and dramatically changed Canadian citizenship through descent rules, opening the door for many Americans with Canadian ancestry who were previously excluded.

For years, many people believed their connection to Canada was too distant to qualify for citizenship. Even individuals with Canadian-born grandparents or great-grandparents were often told the citizenship line had ended because of Canada’s ‘first-generation limit’.

The new legislation changed that.

As a result, many Americans may now qualify for Canadian citizenship through ancestry, particularly families with roots in Quebec and other parts of Canada.

What was the first-generation limit?

Before Bill C-3, Canadian citizens born outside Canada generally could not pass citizenship to children who were also born abroad. This became known as the ‘first-generation limit’.

For example, if a Canadian citizen moved to the US and had children there, those children might still be Canadian citizens. But if the next generation was also born outside Canada, citizenship rights often stopped there.

This created frustration for many families, particularly in the US, where millions of people have Canadian ancestry dating back generations.

The issue became even more controversial after the Ontario Superior Court of Justice ruled in December 2023 that parts of the law were unconstitutional because they treated different categories of Canadians differently.

How Bill C-3 changed Canadian citizenship through descent

Bill C-3 significantly expanded eligibility for people born before 15 December 2025.

Under the revised framework, some people who previously lost citizenship rights because of the first-generation limit may now already be Canadian citizens or may qualify to obtain proof of citizenship.

This means some Americans may now qualify for:

• Canadian citizenship through parent
• Canadian citizenship through grandparent
• Canadian citizenship through great grandparent
• Canadian citizenship through great great grandparent

It is important to understand that citizenship generally flows through a chain of descent, meaning each generation must usually have retained citizenship rights for the next generation to qualify. If someone in the direct line formally renounced Canadian citizenship, eligibility may end at that point.

In practical terms, citizenship eligibility can now extend much further through a family tree than many people realised.

Importantly, it does not matter whether citizenship is traced through the maternal or paternal side of the family. It also generally does not matter whether parents were married.

Why Americans are paying attention

The changes under Bill C-3 have generated enormous interest across the US, particularly in New England and the northern states where French-Canadian migration was historically common.

Many Americans are now researching whether they can inherit Canadian citizenship through ancestors who emigrated from Quebec during the 1800s and early 1900s.

For some people, the motivation is practical. Canadian citizenship can provide the ability to live, work, study or retire in Canada without needing visas or permits. Parents are also increasingly interested in future opportunities for their children, including access to Canadian universities and employment opportunities.

Others simply want another option available for the future.

Importantly, obtaining Canadian citizenship through descent does not cancel US citizenship. Canada allows dual citizenship, and applicants are not required to move to Canada simply because they qualify.

There is also generally no requirement to file Canadian tax returns unless someone actually lives and works in Canada.

The challenge is often the paperwork

Although Bill C-3 expanded eligibility, proving citizenship through ancestry can still be complicated.

Applications often involve obtaining historical birth certificates, marriage records, death records, citizenship records and Quebec parish records spanning multiple generations. In some cases, surnames changed spelling over time or records were created in French.

That is why many Americans choose to work with experienced Regulated Canadian Immigration Consultants who focus specifically on Canadian citizenship through descent applications.

Doherty Fultz Immigration regularly assists Americans with complex ancestry-based citizenship cases, including applications involving missing records, multi-generational family histories and French-Canadian lineage research.

Why are many families applying now?

One of the biggest misconceptions about Canadian citizenship through ancestry is that applicants must relocate to Canada immediately. In reality, many Americans apply simply because they want the option available.

For many families, the reasoning is straightforward: it is better to have Canadian citizenship and never need it than to need it later and not have it available.

If you have Canadian ancestry and want to understand whether Bill C-3 may have changed your eligibility, Doherty Fultz Immigration can help assess your family history and explain the process clearly. To learn more, email citizenship@dfimmigration.ca or book a consultation with the team at Doherty Fultz Immigration.