Conservative Leader Andrew Scheer is registered with the U.S. Selective Service System, the federal agency that administers that country’s military draft, a party spokesperson confirmed Friday.

Scheer confirmed Thursday that he is a dual Canada-U.S. national — his father was born in the U.S. — but said he is in the process of renouncing his American citizenship.

Under U.S. law, all American men between the ages of 18 and 26 must register with the Selective Service System, the U.S. federal agency that maintains information on men who could be conscripted into the military through a system known as “the draft.”

U.S. citizenship comes with many rights and privileges — the freedom to live, work and vote in the world’s largest economy — but it also carries unique responsibilities that the U.S. demands of its citizens.

For example, under U.S. tax law, an American citizen living anywhere in the world must report their global income and file returns with the Internal Revenue Service (IRS). U.S. citizens must file income, estate and gift tax returns with the IRS.

Scheer has said he has filed U.S. tax returns.