The visits were part of Klobuchar's two-day 10-county rural economy tour in Minnesota during which she also discussed her priorties for the 2018 Farm Bill.

At both plants, according to reports, she spoke of the importance of the RFS to rural economies in Minnesota. 

"We always need to keep that strong and watch for efforts to decrease it. But after a long battle, I feel good about it," Klobuchar said during her visit to Guardian Energy, according to a report in the Mesabi Daily News. 

Guardian Energy, located in Janesville, is the largest ethanol plant in Minnesota with a production of 130 million gallons of ethanol per annum. 

"Sen. Klobuchar has been a great supporter of the Renewable Fuel Standard and our core interest," said Jeanne McCaherty, CEO of Guardian Energy.  

Prior to her visit to Guardian Energy, Klobuchar stopped at Claremont's Al-Corn Clean Fuel. The plant is currently undergoing a $146 million expansion exercise which will see it increase production to 120 million gallons a year from 50 million gallons a year. 

According to a report by Agrinews.com, she was briefed on the plant's expansion exercise which will include new railroad tracks to transport ethanol. 

"Our ethanol right now is primarily in the Twin Cities. We are the closest plant to the Cities," said Randall Doyal, CEO of Al-Corn Clean Fuel. 

Sen. Amy Klobuchar at Al-Corn Clean Fuel. Photo credit : Sen. Amy Klobuchar's Official Facebook Page