Upvote:7
If you fall in love with another US citizen and get married and do Adjustment of Status in the US, you wouldn't need a waiver because you wouldn't have a ban if you didn't leave the US, and you are eligible to do Adjustment of Status in that category even if out of status.
I-601 is the immigrant waiver, which would be needed if you left the US and later sought to immigrate but you are still within the period of a ban. If you seek to visit, you need a nonimmigrant waiver.
The process for a nonimmigrant waiver is that you would apply for a visitor visa at a US consulate in Chile, and if you are denied only due to the ban and not also due to immigrant intent, and if the officer recommends you for a waiver, they will show you the process to apply for it. But there is a good chance in your situation that you would also be denied for immigrant intent (for which there is no waiver) and/or the officer would not recommend you for a waiver, in which case you have no options.
Even after the ban is over, you would still have to apply for a visitor visa (you are forever ineligible for the Visa Waiver Program by overstaying it), and there would still be a good chance that you would be denied the visa due to immigrant intent, due to your history of overstay.