The time that Edward Bowman was in jail, he was able to buy from the police and all thanks to the money that the godfather sent him; so that, the police could help him in his revenge plans and that the time he was in the jail, do not have any kind of setback.
Little by little and with each blackmail that the police received, from Edward Bowman and the godfather, more they gave in to their requests and were easy to corrupt them, to do exactly what they wanted them to do.
Also, they were aware that the police salary is not good; so, they gave them a considerable sum of money, to keep them happy and not to report anything they saw.
With the police bribed, they only lacked the CIA and the FBI, but they knew that it would be difficult for them to bribe them and that it would cost them serious problems.
The only thing they could do is infiltrate a good group of people, to help them do things, without anything being recorded.
They had to buy enough people, to achieve their objectives and thus, be calm, for revenge against the Cartwrights.
They managed to infiltrate the people, who were under their command, promising to give them enough money, so that they can live in peace.
When they had everything ready, they only had to wait for Edward Bowman to be released, to begin the execution of revenge.