In the legislative session that ended in May 2013, Dayton pushed for and won a $2.1 billion tax increase, mostly on the wealthy and cigarettes. He also signed a bill legalizing gay marriage in Minnesota, created free, statewide, all-day kindergarten and financed expansions of the Mayo Clinic, 3M and Mall of America. In the spring 2014 session, Dayton came under fire from supporters and foes alike for opposing the legalization of medical marijuana, which polls showed 65% of Minnesotans support. One supporter, the mother of a child with severe epilepsy, alleged Dayton told her in a meeting that he would not legalize the drug but she could buy the drug illegally instead. Dayton denied saying that. On April 2, Marijuana Policy Project began airing an ad across the state attacking Dayton's opposition to medical marijuana legalization, featuring a St. Paul mother and her child whose severe seizures could be cured by medical marijuana.