There is a bill(HR8586) that has been introduced in the house to eliminate all family based sponsorships , except for spouse and minor children of US citizens and green card holders. i.e. Parents, siblings and adult children of citizens would no longer be eligible for sponsorship. While it is uncertain as to what the chances are that the bill will make its way into law in its current state , if this is an issue that you care about, you may want to reach out to your congressperson and senator to voice your concern
Link to the bill: https://www.congress.gov/bill/119th-congress/house-bill/8586/text
The full text has not been uploaded yet, but here's a link to media sources with the key provisions of the bill : https://www.foxnews.com/politics/america-first-immigration-overhaul-bill-would-codify-trumps-campaign-promises
