The formula for calculating FICO credit scores isn't public, the processes for correcting errors on credit reports are not responsive, and lenders use questionable algorithms that affect things like your credit limit.
https://qz.com/1079490/the-equifax-breach-is-proof-its-time-... http://blogs.reuters.com/reuters-wealth/2011/05/23/why-are-c... https://digitalcommons.law.yale.edu/cgi/viewcontent.cgi?refe... https://publicintegrity.org/business/unregulated-fico-has-ke...
Going into debt for an education that is sold as a ticket to higher wages and then being punished in employment and housing for debt you took on and were unable to repay is punitive. It's not just about getting further lines of credit, it's about being able to land a job or find a place to live. Oh and I forgot to even mention debt related to medical expenses. That's a huge issue in the US...
https://www.bostonglobe.com/business/2014/11/12/debt-weighs-... https://www.masslive.com/news/index.ssf/2014/11/crushing_deb...
Weird to jump to the conclusion that I'm not American, but whatever.