This is not true.
Canada requires an ETA by air for US citizens, but a real ID my local license would work if traveling with that and by air.
Passports aren't required by land or sea travel. For US citizens as well.
That said, that's merely having valid ID. That's pretty free flowing.
lots of interesting info here...
Canada
For tourist visits to Canada of less than 180 days, U.S. citizens do not need visas. Other types of travel (e.g., to work, study, or immigrate) generally requires visas. For complete information on visa categories and requirements, consult the
Citizenship and Immigration Canada (CIC) website.
Anyone with a criminal record (including misdemeanors or alcohol-related driving offenses) may not be able to enter Canada without first obtaining an approval for rehabilitation well in advance of any planned travel. To determine whether you may be inadmissible and how to overcome this finding, please refer to the
CIC website.
Entry into Canada is solely determined by Canada Border Services Agency (CBSA) officials in accordance with Canadian law. Please see
the CBSA’s website for full details.
Travel Programs: Both the U.S. and Canadian governments urge frequent travelers to join the
NEXUS trusted traveler program.
Entry into Canada: Canadian law requires that all persons entering Canada carry both proof of citizenship and proof of identity. A valid U.S. passport, passport card, or NEXUS card satisfies these requirements for U.S. citizens.
Children under 16 need only present proof of U.S. citizenship.
Entry into the United States: When traveling by air from Canada, U.S. citizens are required by U.S. law to present a U.S. passport book. A few exceptions to this rule and a full list of documents that can be used at land and sea borders are provided on the
U.S. Customs and Border Protection (CBP) website.
Travel with Minors: If you plan to travel to Canada with a minor who is not your own child or for whom you do not have full legal custody, CBSA may require you to present a notarized affidavit of consent from the minor’s parents. Please refer to the
CBSA websitefor more details.
Travel for Private Boaters and Recreational Vessels: Canadian law requires all foreign private boaters, including recreational vessels, to present themselves upon their arrival in Canada to the CBSA. See the
CBSA website for information regarding reporting requirements upon entry to Canada by boat. For procedures to report arrivals in the United States, please refer to the
Small Vessel Reporting System and
Pleasure Boat Reporting Requirements.
The U.S. Department of State is unaware of any HIV/AIDS entry restrictions for visitors to or foreign residents of Canada.
Find information on
dual nationality,
prevention of international parental child abduction, and
customs information on our websites.
On the flip side, Canadians MUST have a valid Canadian passport to enter the USA.