The U.S. Coast Guard is still searching for the origin of the Gulf of Mexico leak.
The peace activist faces felony charges after allegedly refusing the Coast Guard's pleas for him to disembark and threatening to harm himself with a knife and a fake bomb.
The agency has convened a Marine Board of Investigation, its highest-level probe.
“It begs the question: Could this have been resolved differently if leadership had just acted sooner?" Rep. Dan Crenshaw said.
The announcement follows the search team finding debris near the Titanic wreckage that appeared to be from the Titan vessel.
The discovery was made by a remote operating vehicle that was searching the area near the Titanic, the Coast Guard said Thursday.
The five-person vessel, which was being operated by OceanGate Expeditions, reportedly got lost last year during a similar dive.
The passenger fell from the Carnival Magic ship about 185 miles east of Jacksonville.
The influx of sea arrivals came in the face of a crackdown by Italy’s right-wing government on people smugglers announced only two days earlier.
But recovery of the remnants of the Chinese spy balloon off the Carolina coast has been successful, officials said.