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) Finally, a deeply conservative member of Congress, Rep. Justin Amash of Michigan, has put the US Constitution before partisan loyalty to President Donald Trump. The question is -- will this inspire other Republicans to do the same, or will they continue to defend Trump against any claims of wrongdoing arising from Robert Mueller's investigation? If social media is any indication, it's likely they will do the latter -- at least for now.

In any event, on Saturday, Amash became the first GOP congressional leader to call for the impeachment of Trump. As Amash laid it out in a series of tweets , "President Trump has engaged in impeachable conduct." Amash went on to detail how he reached his conclusion, noting it only came after "having read Mueller's redacted report carefully and completely" and discussing the pertinent testimony of witnesses with his staff.

JUST WATCHED Cupp reacts to Amash tweet: This is big Replay More Videos ... MUST WATCH Cupp reacts to Amash tweet: This is big 04:11

Based on that analysis, Amash, who was first elected to the House in 2010, wrote point blank, "Mueller's report reveals that President Trump engaged in specific actions and a pattern of behavior that meet the threshold for impeachment."

It's truly stunning to see a member of Congress publicly call for impeachment of the President who is in his own party. But, as Amash explained is his tweets, his motivation to break from the GOP party line was simple: "When loyalty to a political party or to an individual trumps loyalty to the Constitution, the Rule of Law -- the foundation of liberty -- crumbles."

Amash is right. You don't need to have a Ph.D. in political science to understand that if elected officials blindly defend the actions of a president simply because they are in the same political party, it's a prescription for disaster for our nation. That is the very definition of putting politics before our Constitution.