"I think it's going to be difficult if [Simpson] arranges to have [book profits] deposited abroad," said lawyer Tom Mesereau, who successfully defended Michael Jackson in his child molestation trial in 2005. "It's one thing to enforce a judgment in America, and another to enforce it overseas."
Mesereau said Simpson also might have profits "paid into a trust offshore or a corporation in a different name."
"He could make it difficult," he said.
Galanter said that the amount Simpson had received was so much less than reported that it would not have been worth it for Simpson to try and hide the money overseas or anywhere else.
Galanter, who said he only learned about the deal on Monday, said the Goldman lawyers would have had to "domesticate" the civil judgment against Simpson.
In other words, they would have had to take legal steps in California to ensure that the multimillion-dollar judgment was applicable in Florida, where Simpson lives and works.
Galanter says the Goldman attorneys have not taken those actions since the judgment. But Petrocelli said the families still have time to take those actions.
Simpson was acquitted in state court of the murders of his ex-wife and Goldman. He cannot be prosecuted again, under a Fifth Amendment clause known as "double jeopardy," which protects individuals from being prosecuted for the same crime twice.
While you can be retried for a crime in which a jury could not reach a verdict, you cannot be prosecuted for a crime in which a jury has already acquitted -- or convicted -- you.
In rare cases, individuals who have been acquitted of crimes in state court have been prosecuted in federal courts on different charges arising from the same crime.
Mafia boss John Gotti was once acquitted of a murder in state court, and later prosecuted for racketeering in federal court. One of the predicate acts contained in the racketeering charge was the murder for which he had previously been acquitted.
Legal experts say it's virtually impossible that Simpson could be prosecuted in federal court for violating the civil rights of Brown Simpson and Goldman, because there's no applicable federal law.
None of the legal experts ABC News spoke with could think of any other legal theory under federal law that could reasonably be used to charge Simpson again with the murders.
Lawyers for the Goldmans may watch to see whether in the book or the interview Simpson contradicts his testimony in the civil wrongful death suit the Goldmans filed against him.
He did not take the stand in his 1994 criminal trial.
But perjury is a difficult crime to prove. A hypothetical statement in a book or television interview would not suffice, according to Gerald Uelmen, professor of law at Santa Clara University Law School.
Professor Mark Kelman of Stanford Law School calls perjury prosecutions based on previous assertions of innocence extraordinarily rare -- if they have ever been pursued at all. Kelman said these prosecutions "violate the spirit if not the letter" of double-jeopardy laws.
Simpson reportedly refers to an accomplice who accompanies him to the house and hands him a knife.
If, in fact, a previously unknown accomplice was identified by Simpson, prosecutors could pursue accessory to murder charges, but again, it's unlikely they would, Mesereau said.
"There's no statute of limitations for murder, but they would have to have a case they could prove beyond a reasonable doubt," Mesereau said.
"The book may provide leads, but the Los Angeles District Attorney's office was burned so badly that they are not likely to pursue new leads at this point."