Approval of your I-212 waiver application might be the only way that you can return to the United States, at least for a long time. Because of this, you need to be particularly careful to avoid any errors or omissions. Use this brief step-by-step guide in conjunction with the I-212 Instructions and advice from your immigration lawyer.
Both unlawful entry into and unlawful presence in the US are violations of US immigration law that can result in deportation, long-term bns on re-entering the US and in some cases, even criminal liability. In view of the seriousness with which US immigration authorities take these offenses, it seems appropriate to explain precisely what these offenses entail.
If your I-212 application was approved, congratulations! Despite this victory, however, it is too early to book your flight to the US. All an I-212 waiver does is to grant you the right to apply for a visa to enter the US (assuming that you are not inadmissible for some reason that the I-212 waiver does not cover). Following is an explanation of the relationship between an I-212 waiver and your post-waiver visa status
An I-212 waiver application is not a visa application -- instead, it is an application for permission to apply for a visa after you have been deported (removed). This means that even if your I-212 application is approved, your visa application could still be turned down. You must apply for an I-212 waiver from abroad -- you cannot apply while in the US.