What we are dealing with here are claims that the Kenyan-born president of the United States willfully subverted the Constitution for his own ambition. Think of it—that is somewhere between Richard Nixon’s impeachment and treason. That is why the Joe McCarthy analogy (a comparison that I use, at most, once a decade) is so apt. Campaign reporters dealing with the vitriol from Trump and other birthers should ask themselves, “How would I have covered a major 1950s political figure who echoed the John Birch Society’s charges that President Dwight Eisenhower was a knowing agent of the international Communist conspiracy?”

My own answer—and I realize that it could make all future Trump stories clunky—is to overwhelm the reader with evidence why the birther conspiracy theories are factually wrong. A version of this approach was found in a 12-paragraph Los Angeles Times blog post on Trump by Morgan Little that pointedly included two paragraphs detailing how Arizona Secretary of State Ken Bennett had recently apologized for challenging Obama’s birthplace after receiving official documents from Hawaii. I also understand the impulse that prompted Jeremy Stahl in Slate to call Trump’s theories “batshit,” even though I suspect that this emphatic compound noun is not likely to grace the pages of The New York Times. (Political scientist Brendan Nyhan, who has written for CJR about his research showing that too much repetition of false charges, even to debunk them, can contribute to reader misperception, has further thoughts on effective strategies here).

If only Trump were a trompe l’oeil illusion that you could blink away to return to standard campaign coverage. But his attention-getting endorsement of birther bile is so insidious that campaign reporters must always go beyond Trump-claimed-and-Democrats-responded false equivalence. Some things in politics are simply out of bounds—as Joe McCarthy demonstrated six decades ago.

If you'd like to get email from CJR writers and editors, add your email address to our newsletter roll and we'll be in touch.

Walter Shapiro just chronicled his ninth presidential campaign. He writes the “Character Sketch” political column for Yahoo News. Follow him on Twitter @WalterShapiroPD.