The trip also helped Mr Redman gain a deeper perspective on the need to enhance the progress of biotechnology in WA and stimulate research and development of GM wheat.

Walking into flourishing corn crops mid season in North America, Mr Redman met with a range of agricultural industry stakeholders on the two-week tour.

His aim was to gather information on two target issues, GM crops and biofuels, with climate change another important topic on the periphery.

The trip will also provide evidence for the current review of the GM Crops Free Act, which prohibits the commercial production of GM crops in WA.

"There was nothing substantial that I saw over there on my trip which is sending me signals which says we are not heading down a reasonable path that is going to provide options and choices for our farmers like they have in the US and Canada," Mr Redman said.

"If anything they were surprised we are taking this level of caution.

"GM canola has gone gangbusters and they are not seeing any measurable issues with getting those products into their key markets."

In Washington, Mr Redman met with officials from the American Farm Bureau, which represents about six million farmers.

He said the bureau was concerned about climate change and its impact on farmers and was also supportive of GMs and biofuels.

However, he said they had trouble understanding why Australia had lingering concerns over the use of GM crops.