In two interviews on Saturday, Ted Cruz reiterated his support for marijuana federalism. "Personally," he told the ABC station in Denver, "I would vote against marijuana legalization. If the state of Texas had a referendum on it, I would vote no. But I think it is the prerogative of the states to make that determination. I think the people of Colorado have the right to make the decision that they've made under the Constitution, and as president I would respect that right."

Talking to The Denver Post the same day, Cruz explained the practical advantages of letting states go their own way. "It is an opportunity for the rest of the country to see what happens here in Colorado, what happens in Washington state, see the states implement the policies," he said. "If it works well, other states may choose to follow. If it doesn't work well, other states may choose not to follow." He said it was too early to say how legalization is going in Colorado.

Those comments comport with what Cruz said at last year's Conservative Political Action Conference. "I actually think this is a great embodiment of what Supreme Court Justice Louis Brandeis called 'the laboratories of democracy,'" he told Fox News host Sean Hannity. "If the citizens of Colorado decide they want to go down that road, that's their prerogative. I personally don't agree with it, but that's their right." That marked a turnaround from Cruz's stance a year before, when he was complaining that the Obama administration had abdicated its responsibility to enforce the federal marijuana ban in states that had legalized the drug.

Most of the major-party presidential candidates (including all of those who remain in the race) agreed with Cruz that the feds should not interfere with marijuana legalization in states such as Colorado and Washington. The most vigorous dissenter from that position, Chris Christie, never scored higher than 5 percent in national polls. After quitting the race in February, Christie endorsed Donald Trump, who like Cruz says states should be free to legalize pot.