NEW YORK (CBSNewYork/AP) — The defense is set to begin closing arguments Wednesday in the corruption retrial of former New York Senate Majority Leader Dean Skelos and his son, Adam.

Skelos is accused of using his political power to blackmail three businesses into hiring his son for “no work” jobs.

On Tuesday, Assistant U.S. Attorney Thomas McKay called the once-powerful Long Island Republican and his son “partners in crime” who strong-armed the businesses into funneling hundreds of thousands of dollars to the son for various fake projects.

If their victims didn’t agree, the senator made it clear they risked losing his backing on legislation they needed for financial success, he said.

The companies felt “constant pressure from Dean Skelos — the fear he would punish them by using his official power if they didn’t pay up,” added. “They were the targets of the Skelos family shakedown.”

The prosecutor also asked the jury to reject defense arguments that the elder Skelos was a devoted father merely looking out for a child who had hit hard times.

“No one disputes Dean Skelos loves his son,” McKay said. But, he added, “You can’t commit a crime and say it’s ok because ‘I did it to help my son.’ That argument is insulting to the mothers and fathers who help their children without committing a crime.”

The jury has heard testimony from Anthony Bonomo, the CEO for an insurance company who described how Adam Skelos stopped turning up for a $78,000-a-year sales job. But he testified he didn’t consider firing him because he “didn’t want Adam’s problem to become a wedge for our legislative pursuits in Albany.”

Another witness, title company partner Tom Dwyer, testified that he was the bag man for a real estate developer who decided to give Adam Skelos a $20,000 bribe disguised as a referral fee for title insurance. He said he delivered the cash in an envelope during 2013 lunch on Long Island.

The developer, Charles Dorego, made the payment “to get the senator off his back,” McKay said.

Skelos, 70, testified in his own defense last week, telling the jury he was constantly worried about a son who had emotional struggles as a child and financial woes as an adult. He claimed he was merely asking the businessmen to help out as friends.

“I didn’t see a problem with it,” he said. “I asked a lot of people to help my son.”

The father and son were convicted in 2015 of extortion, conspiracy and bribery. But a new trial was ordered by a federal appeals court in Manhattan after the U.S. Supreme Court narrowed the law regarding public corruption as it reversed the conviction of former Republican Virginia Gov. Bob McDonnell.

(© Copyright 2018 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)