The backdoor Roth didn't exist until 2010; Thiel's initial contributions were in 1999. https://en.wikipedia.org/wiki/Tax_Increase_Prevention_and_Reconciliation

The backdoor Roth didn't exist until 2010; Thiel's initial contributions were in 1999. https://en.wikipedia.org/wiki/Tax_Increase_Prevention_and_Reconciliation_Act_of_2005#Conversions_to_Roth_IRAs https://en.wikipedia.org/wiki/Tax_Increase_Prevention_and_Re...