calls for a federal investigation came after the Federal Com...

Said calls started rolling in after FCC (not the public contest-promoting company; it's short for Federal Communications Commission) didn't fnd any fault on Google's practices, although it hasn't been ruled out that something might be amiss within the juggernaut-sized search engine's ramparts; hence the claims that google's practices shoudl be further pressed into disclosing more of its shop information to the public at large.

CORRETO.
O item fala que as chamadas para investigações federais foi após a FCC descobrir que a Google não infringiu a lei.
Algumas palavras, no primeiro parágrafo, nos dão essa evidência.
Vejam:
new and broader investigation ... ( nova e ampla investigação)
after FCC announced ... found no evidence... ( após a FCC anunciar ... não econtrou evidência)

calling for  a NEW  investigation....

entendi que seria uma nova investigação ...portanto já houve outra...