Girl Guides of Canada has cancelled all trips to the United States until further notice because it fears problems at the border.
The announcement comes days before President Donald Trump's new US travel ban comes into effect on Thursday.
In a statement, the group said the "ability of all our members to equally enter this country is currently uncertain".
The suspension includes short trips and all travel through US airports.
The group has also scrapped a planned summer camping trip to California in favour of an alternate destination.
Under the new ban, all nationals from Syria, Iran, Libya, Somalia, Sudan, and Yemen will not be permitted to enter the US or be issued an immigrant or non-immigrant visa for the period of the ban.
The release does not specifically mention the new 90-day ban on citizens of six mostly Muslim nations but in the statement, the organisation said that "we know our members value the safe, inclusive and accepting space that Guiding provides".
It went on: "These values are reflected in all we do, including the Girl Guide travel experiences we offer girls and women. This was a very difficult decision to make. We hope that members will appreciate this reflects our commitment to inclusivity and equal opportunities for all girls and women."
The Girl Guides of Canada has chapters in provinces across the country and some 70,000 members.
Some Canadian schools have also cancelled trips to the US in the wake of the travel ban, including the Greater Essex County District School Board in south-western Ontario.