Surrounded by dozens of cheering people in green clothes, Minnesota Democratic Gov. Tim Walz signed a bill Tuesday to legalize recreational marijuana for people over the age of 21 starting in August, making Minnesota the 23rd state to legalize the substance for adults.'Among them was one of the first governors in the U.S. to openly support marijuana legalization.“For me personally, it’s very wonderful to see a dream of yours over 20 years ago finally happen today, and I’m still alive to see it,” said Jesse Ventura, Minnesota's governor from 1999-2003. He said people have become educated about marijuana, rather than relying on dramatizations of its dangers.Under the new law, cannabis will be legal by Aug. 1 to possess, use and grow at home. Possession of cannabis flower will be limited to 2 pounds (0.9 kilograms) at home and 2 ounces (56 grams) in public. Other possession caps include 800 milligrams of THC in gummies and other edibles and 8 grams of cannabis concentrate.Retail sales at dispensaries will probably be at least a year away. Once licensed, stores will charge sales tax plus a 10% cannabis tax.Minnesotans who have been convicted of misdemeanor or petty misdemeanor possession will also get their records automatically expunged. However, the Bureau of Criminal Apprehension has estimated it will take until August of next year to process all cases.Others with more serious convictions, such as those with possession offenses that exceeded even the new limits, may also be able to apply for reduced sentences.