OTM is a delightful little acronym for illegal immigrants who are 'Other Than Mexican' — SIA stands for 'Special Interest Aliens' from terrorist nations like Iraq, Iran, Afghanistan, Sudan, Somalia, Pakistan, and Yemen Newsflash: Terrorists, potential terrorists, and supporters of terrorists are entering the United States illegally. Newsflash: They’ve been doing it for years. Newsflash: The Mexican border — and the network of tunnels that runs beneath that land — is a popular entry point for these aforementioned, uh, individuals.