Psaki is playin' fast and loose with the English language, again. There has been NO actual litigation, or investigation, for that matter. Psaki's use of the term "litigated" is nothing more than a nod to the fevered discussions among the Biden campaign people and their media toadies as to how best to sweep Tara Reade under the rug.
Tara Reade Accuses Psaki Of ‘Misleading The Public’ By Saying Her Allegations Were ‘Heavily Litigated During The Campaign’
http://dailycaller.com/2021/08/04/tara-reade-joe-biden-jen-psaki-metoo-andrew-cuomo/
The essential American soul is hard, isolate, stoic, and a killer. It has never yet melted. ~ D.H. Lawrence