What it means to be inadmissible some people arent allowed to come to canada theyre inadmissible under canadas immigration law a canadian immigration officer will decide if you can enter canada when you apply for a visa or an electronic travel authorization eta or when you arrive at a port of entry. If youre found inadmissible youll be denied a visa or an electronic travel authorization eta refused entry to or removed from canada you could be found inadmissible for a number of reasons such as security reasons including espionage subversion attempts to overthrow a government etc violence or terrorism. Medical issues on the other hand a person can be considered inadmissible to canada due to their health if a person has a medical condition that poses a serious threat to the health or safety of the canadian public they will likely not be allowed to enter the country likewise a person might be denied entry if an immigration officer determines that there is a chance that they will pose an . Most forms of assault can render someone inadmissible to canada assault can refer to a number of different forms of physical altercation that might take place between individuals these can range from spontaneous bar fights to passionate crimes of violence carried out with premeditation and intent regardless of their place along this spectrum in most cases incidents of assault result in inadmissibility to canada