After a June 2013 meeting in his Sacramento office, state Sen. Leland Yee took a stroll with political consultant Keith Jackson and two undercover FBI agents posing as businessmen trying to gain legislative clout for a purported “Anheuser-Busch of the medical marijuana industry.”

As they walked to a cafe, Yee, who had been soliciting campaign money for his nascent secretary of state run, worried about the donations being tied to his support for any particular medical marijuana bills. Yee appeared well aware he was dancing close to a corruption line all too familiar in the Capitol’s corridors of power, court records show.

“I’m just trying to run for secretary of state,” Yee told the federal agents. “I hope I don’t get indicted.”

Nearly a year later, Yee’s worst fears have materialized. Not only has he been arrested, but legal experts say the now-suspended Democratic state senator is in deep trouble if the federal charges reach a jury. Even though defense lawyers say he could try claiming he was entrapped, the case rests on a type of evidence that is almost impossible to rebut — his own secretly recorded promises to trade his political juice for campaign money.

“It looks to me like he’s got plenty to worry about,” said Rory Little, a Hastings College of the Law professor and a former federal prosecutor.

The 65-year-old career politician has been charged with seven federal felonies as a result of dozens of such clandestine meetings with undercover FBI agents, many involving promises of political favors, influence peddling with fellow legislators and a Hollywood-style scheme to arrange a multimillion-dollar illegal weapons deal through the Philippines for an undercover operative claiming to be a New Jersey mobster.

At the heart of the government’s case against Yee are his own words — replete with expletive-laced demands for money in exchange for political favors, even if it meant dealing with gun runners and organized crime figures.

As one former federal law enforcement official put it, “The jury literally gets to listen to the defendant commit the crime.”

While Yee is charged with firearms trafficking, the centerpiece of the corruption counts against him involve four separate schemes between May 2011 and just a few weeks ago. The FBI’s breakdown reveals:

Clandestine meetings with an undercover agent to secure as much as $2 million in high-power weaponry in exchange for payments to Yee and his political campaign. In one of those meetings, Yee assures the agent, who holds himself out to be East Coast Mafia, “Do I think we can make some money? I think we can make some money.”

Deals with an agent posing as an Atlanta businessman backing a fictitious software company called Well-Tech, seeking Yee’s help, including an attempt to secure a contract with the state Department of Public Health in exchange for a $10,000 check for the secretary of state campaign,

Offering to help an agent posing as an Arizona medical marijuana industry insider looking to expand into California. Yee, again in exchange for campaign contributions, introduced the undercover agent to unidentified legislators and promised political support, particularly if elected to statewide office.