There are many grounds for an individual to be found "inadmissible" to the United States. Past immigration violations, criminal convictions, fraud, or drug use are common reasons why people are found inadmissible. If someone is found inadmissible they may not be admitted (legally permitted to obtain status) in the United States. Luckily, for the many grounds of inadmissibility that exist, there are many waivers available which will waive or pardon the ground of inadmissibility and allow the individual to obtain lawful status.
Sometimes it may be possible to successfully argue that you actually don't need a waiver despite what Immigration might have decided. How to prepare a successful immigrant visa waiver application.
It is currently unknown what the fate of waivers will be under the Trump administration. Will Trump's executive order be the end of the 601A waiver?
DOCUMENTS TO PROVE EXTREME HARDSHIP
This is a non-exhaustive list of documents to gather in order to start making your case for a 601A extreme hardship waiver.
Use this is a STARTING POINT to collect documents in support of your claim of extreme hardship. Not all of the items will apply to you but try to gather as many as possible that do apply to your case then you can get into more specific evidence for your unique case. 601A Extreme Hardship Check List.
Trump's Executive Order and 601A Waiver: Unknown what the effect will be at this time.
601A PROVISIONAL WAIVER
For the millions of people who have entered the U.S. without legal documentation it is impossible to apply for legal status without first obtaining a waiver of inadmissibility for unlawful presence. Up until recently this meant that if you originally entered the U.S. illegally you would have to leave the country first and return to your original homeland in order to obtain such a waiver and be considered eligible for lawful entry.
MORE INFORMATION ABOUT 601A WAIVERS HERE
J-1 NO OBJECTION WAIVER
J-1 Visa holders are subject to a two-year home residency requirement. This means they must return to their home country and reside there for two years before they will be eligible for any additional immigration benefit in the US.