I am amused that Donald Trump is once again reminding voters that Ted Cruz was born in Canada.

Before speaking at a rally on Monday night in Lowell, Massachusetts, Trump stated, “Republicans are going to have to ask themselves the question: ‘Do we want a candidate who could be tied up in court for two years?’ That’d be a big problem.”

Yet it was only four months ago just as the two were to appear together at a rally on Capitol Hill opposing the Iran nuclear deal when Trump told reporters, “I hear it was checked out by every attorney and every which way and I understand Ted is in fine shape.”

Dale Benn asks, by e-mail, the following question:

Excepting economics what subject do you [Boudreaux] feel is most important for economists to know better?

During his address on gun control, President Obama noted that gun violence "happens on the streets of Chicago every day."

Last I checked, Chicago is the gun control capital of America. Consider this 2013 New York Times article written by Monica Davey, the paper's Chicago bureau chief:

In Chicago, the rules for owning a handgun — rewritten after the outright ban was deemed too restrictive in 2010 — sound arduous. Owners must seek a Chicago firearms permit, which requires firearms training, a background check and a state-mandated firearm owner’s identification card, which requires a different background review for felonies and mental illness. To prevent straw buyers from selling or giving their weapons to people who would not meet the restrictions — girlfriends buying guns for gang members is a common problem, the police here say — the city requires permitted gun owners to report their weapons lost, sold or stolen.

When you don't have many domestic policy accomplishments to note, and your foreign policy largely involves ignoring anything important, a year-end review of your "best moments" will be slim, indeed.

Which, of course, explains why this year, in the White House's 2015 retrospective, they listed "joining Twitter" as one of President Obama's top events. Now, as the President's social media reach has expanded, and at least a chunk of his free time dedicated to spouting his every thought in 140 characters or less, the White House knows it has achieved at least something: simply avoiding the President's speeches and press conferences in traditional media will not completely erase him from your daily life.

“Americans also shared in some more personal moments with the President, like when he walked across the Edmund Pettus Bridge 50 years after the first marches from Selma to Montgomery,” the blog post said. “Or when he sang ‘Amazing Grace’ in honor of those who lost their lives to gun violence in Charleston, South Carolina.”