It said the teams could have faced serious legal difficulties had they raced against the orders of tyre manufacturer Michelin, and therefore they would recommend to the World Motor Sport Council that the teams should not be disciplined.
Only six cars started the race in Indianapolis on June 19 with thousands of spectators forced to watch a farcical contest, after Michelin advised teams using their tyres that they were not safe to race.
FIA ruled on June 29 that the teams were guilty on two of the five charges against them and punishments were expected to be imposed at the extraordinary meeting of the World Motor Sport Council on September 14.
Thursday's statement from the 12-man Senate, the highest non-executive FIA committee, said: "Both the FIA and the teams could have faced serious legal difficulties in the United States had they not observed their respective rules and contractual obligations (particularly had there been any kind of accident).
It went on “the Senate was of the view that disciplinary proceedings against the teams had ceased to be appropriate and were not longer in the interest of the sport."
McLaren boss Ron Dennis said they risk being sued had they raced, even if there was not an accident, because of the document from Michelin that said it was dangerous to race. An Indiana State law allows for court action against those who put other people’s lives in danger.
