Dean Obeidallah, a former attorney, is the host of SiriusXM radio's daily program "The Dean Obeidallah Show" and a columnist for The Daily Beast. Follow him @DeanObeidallah. The opinions expressed in this commentary are his own. View more opinion articles on CNN.

(CNN) Donald Trump implied during that 2016 presidential campaign that if a candidate accepts the endorsement of a political figure, that candidate must then answer for the wrongs of the person endorsing him or her. Trump told us as much in December 2015 after Hillary Clinton announced that Bill Clinton would be taking to the campaign trail to help her run for the White House.

In response, Trump tweeted , "Hillary Clinton has announced that she is letting her husband out to campaign but HE'S DEMONSTRATED A PENCHANT FOR SEXISM, so inappropriate!"

It's only fair to apply Trump's own rule to every single Republican that Trump endorses and campaigns on behalf of in this year's election and beyond. After all, Trump wouldn't want one set of rules to apply to the Clintons and another to himself, right?! (Stop laughing.)

But all snickering aside, Trump makes a valid point. If candidates do openly accept the endorsement of a well-known politician, it's certainly fair to ask those candidates where they agree and disagree with that political figure when it comes to policy issues.

For example, if a progressive Democrat running for Congress accepted the endorsement and campaigned alongside a politician who was known for opposing a woman's right to choose or wanted to repeal the Affordable Care Act, the public and the media would naturally ask the candidate for a reaction to how can he or she accept the endorsement of someone with such a different view on these substantive issues.

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