A practical guide to surviving your 221G while stuck in Canada Hi, If you are reading this, then you are coming to Canada (or are already here) for US visa stamping and are wondering what is 221G, are already stuck because of it. I am putting some information out here that can help you with some of the FAQs or guidance on what to expect or what to do. Your situation may be different so apply as appropriate to your individual circumstances. What is 221G? There are lot of other