I was in US from 2015 to 2019 on F1 visa. Before leaving US I had applied for CPT and came back to india due to some personal reasons. My CPT was approved and my brother sent me the CPT card. In 2019 december I wanted to go back to US and my visa was cancelled at port of entry as they said I was working illegally. I showed all the proofs that I wasn’t working anywhere as my fees and other expenses were taken care by my brother, because I was staying with my brother during the 4 and half year tenure. All the expenses were paid via account only. But there were some students who were from the same university and they were caught working illegally and they recognised me and officer was not ready to believe me. Obviously he has a lot of reasons for not believing me. So, my visa was cancelled. Now I am trying to go back to US and reached out to senates office and they said there will be a waiver form to be submitted and they will take their time to validate it and if possible they will waive the cancellation. But I have been searching as what kind of waiver form needs to be submitted. If anyone can help me finding out the waiver for that would be great. hoping to find some answer.