My son was born in Canada

You failed to mention your immigration status. Depending upon your immigration status, your son may qualify for immigration benefits. Your son may also qualify for DACA. A person seeking DACA must meet the following criteria: (1) been under the age of 31 on June 15, 2012; (2) arrived to the United States before reaching the 16th birthday; (3) continuously resided in the United States since June 15, 2007 up to the present time; (4) been physically present in the United States on June 15, 2012; (5) been physically present at the time of requesting deferred action from USCIS; (6) entered without inspection before June 15, 2012 or had any lawful immigration status expired on or before this deadline; (7) been in school at the time of application, or have already graduated or obtained a certificate of completion from high school, or have obtained a general educational development (GED) certificate, or are an honorably discharged veteran of the U.S. Coast Guard or the U.S. Armed Forces; and (8) not been convicted of a felony, significant misdemeanor, or three or more other misdemeanors, and do not otherwise pose a threat to national security or public safety. You can read more about DACA at http://myattorneyusa.com/deferred-action-for-childhood-arrivals-daca.