61% of Americans think marijuana use should be legal, a five-point increase from previous year and the highest percentage ever recorded in this poll.
Medical marijuana is legal in 30 states and Washington, DC, while five states will vote to legalize recreational marijuana - and another four for medicinal use - in November.
A majority of those polled strongly disagreed with the federal classification of marijuana as a Schedule I drug alongside narcotics and feel the policy does not make sense given the legality of alcohol and tobacco.
A new national Quinnipiac Poll found support for legal marijuana at an all-time high. "We'll see them in court, " Schiller said.
People look at jars of marijuana at the medical marijuana farmers market at the California Heritage Market in Los Angeles, California July 11, 2014.
The roughly $200 million in tax revenue from more than $1 billion in sales a year ago funds all that, she says, plus provides $40 million for schools.
Peter Bensinger, a former administrator of the U.S. Drug Enforcement Administration, cited federal statistics showing marijuana use among teenagers initially increased 20 percent in the first two years after legalization in Colorado, compared with the two years prior.
Many states have legalized pot in some form, and most Americans don't think the federal government should try to stop its sale and use in those states.
Supporters of legalizing marijuana in IL addressed a panel of legislators in Chicago Wednesday and brought in a ringer: the chief tax collector in Colorado, who explained how legal weed is helping fund essential state programs. Overall, about 60 percent of the respondents support recreational legalization.
Republicans and voters over 65 years old were the only subgroups to oppose legalized marijuana.
Who supports it, and who's tried it?
Trudeau, who admitted to smoking pot after becoming an MP, told Bloomberg on Thursday that Canada's legalization strategy is built around a recognition that marijuana is "not good" for the developing brains of young people.
Quinnipiac University surveyed 1,062 US voters from April 12 - 18, and found a margin of error of 3%.
The error due to sampling for results based on the entire sample could be plus or minus four percentage points.