https://www.uscis.gov/newsroom/news-releases/uscis-issues-final-rule-to-adjust-certain-immigration-and-naturalization-fees?fbclid=IwAR3eLfPAEICFVU_ZLL76XB7O9t0YZkgUq0igLljJae-GMiHi0KVvvL0e_rw
https://www.boundless.com/blog/uscis-fees-to-increase/
