For a simple &quick start in the morning, wikipedia has quite a bit of info:
en.wikipedia.org/wiki/Bill_Browder
Origins: Jewish family (Chicago)
Earl Browder (paternal grandfather) was a commie, who fell out of favor w/ Moscow after WW II.
Lots of Physics & Maths in the family, Felix Browder (father) got the National Medal of Science from President Bill Clinton (1999)
Bill gave up US citizenship to dodge tax bill on foreign investments
Boston Consulting Group in London & managed Russian proprietary investments desk at Salomon Brothers
Russian government attempted to place Browder on Interpol's arrest list for tax evasion (again tax evasion), which was protested by US congressional leaders and rejected by Interpol (Oct 2017)
Was arrested in Spain in May 2018 due to another attempt by russian government to have him on the Interpol list, but released quickly by the Spaniards.
Lots of more stuff – but he's in it, balls-deep and sure dirty af