Among the 64 people who will advise Republican presidential nominee Donald Trump on agriculture policy are Kansas’ governor and senior senator.

Gov. Sam Brownback and U.S. Sen. Pat Roberts, both Republicans, have joined Trump’s agricultural advisory committee, a board that will convene on a regular basis to inform Trump.

"The members of my agricultural advisory committee represent the best that America can offer to help serve agricultural communities," Trump said in a news release Tuesday. "Many of these officials have been elected by their communities to solve the issues that impact our rural areas every day."

Roberts is chairman of the Senate Agriculture Committee and former chairman of the House Agriculture Committee, the only person to serve both roles. Brownback was Kansas secretary of agriculture in the late 1980s and early 1990s.

"The governor looks forward to sharing the important role agriculture plays in contributing to the growth of the American economy," said Eileen Hawley, Brownback’s spokeswoman. "We appreciate that the Trump campaign recognizes our knowledge of agricultural economics."

During the weekend, Brownback spoke in California to commemorate President Ronald Reagan’s 1981 tax cuts. During a question-and-answer segment, he was asked if he has endorsed Trump.

"I have," Brownback said as the crowd clapped. "He wasn’t my first pick. I was a Rubio guy because I really want to win this cycle and Hillary (Clinton) is adamantly beatable, she really is, and I thought he had the best package to be able to do this with."

Without naming names, Brownback said he was disappointed some Republicans pledged to support the Republican nominee but have refused to do so since Trump won the nomination. U.S. Sen. Susan Collins, R-Maine, said in a Washington Post op-ed last Monday that she won’t vote for Trump.

"I had a guy tell me a long time ago, ‘When a man breaks his word, it breaks the man.’ If you say you’re going to do it, you need to do it," Brownback said, another line that was met with applause.

Meeting with reporters Friday, the governor praised Trump’s choice of Indiana Gov. Mike Pence as a running mate and argued Trump will choose conservative justices to the U.S. Supreme Court.

Both Brownback and Roberts attended the Republican National Convention in Cleveland last month, where Trump was formally nominated. Roberts spoke briefly in favor of the nominee and has reiterated his support for Trump, telling a town hall crowd in Oskaloosa last week that Republicans should back him.

"He’s the nominee, regardless of what you think of his opinion, or whatever, or whether I agree with him," Roberts said. "He is unique, that’s for sure. But I don’t think it does us any good to get into all this infighting back and forth over the nominee."

Roberts said he has never met Trump. If they meet, Roberts said, he has a list of five talking points on agriculture policy he would hand Trump.

There are a total of four Kansans on Trump’s agricultural advisory committee. In addition to Brownback and Roberts, David Spears and Jay Armstrong will inform the nominee.

Spears is a former agriculture advisor to U.S. Sen. Bob Dole, current senior vice president of Mid-Kansas Cooperative and former member of the Commodity Futures Trading Commission.

Armstrong is a former chairman of the Kansas Wheat Commission and former chairman of the Farm Foundation. He operates Armstrong Farms in the Atchison County town of Muscotah.