There are a lot of people with deferred action who have final orders - the Obama administration prosecuted all unauthorized presence cases prior to 2012-2013. There are a lot of DACA recipients with final orders. All have already been vetted, background-checked, etc.
That is the point of asking for a pardon for immigrant communities: the pardon would eliminate the final order and I don't think they can prosecute you again, using existing file data, for the same reason.
What Trump proposes or is giving lip-service to is what Obama's administration said they would do: expel criminal violators, threats to society, and de-criminalize unlawful presence. If you lose your DACA , you are just like every other undocumented person. Your "crime" is unlawful presence.
