 From the KCRG TV9 Newsroom, I'm Beth Malicki. A federal judge Wednesday heard arguments on whether to block a new state law limiting the amount of THC in hemp products. The new law allows only four milligrams of THC per serving. The store Don't Worry, Be Hempy in Cedar Rapids had to take 20 products off of its shelves that did not comply with the new law. And the business also manufactures some of its own products. All but one are no longer legal to sell.