President Donald Trump slammed Rep. Thomas Massie, R-Ky., on social media, calling him a "LOSER" after the legislator posted a string of social media posts criticizing the president for bombing Irans nuclear facilities on Saturday night.Massie said on X that Trumps actions were "not constitutional.""When two countries are bombing each other daily in a hot war, and a third country joins the bombing, thats an act of war," Massie said in another post. "Im amazed at the mental gymnastics being undertaken by neocons in D.C. (and their social media bots) to say we arent at war so they can make war."FAR LEFT, ANTI-ISRAEL VOICES DECRY TRUMP IRAN STRIKE, DISMISS IDEA HE'S 'ANTIWAR PRESIDENT'In another post, Massie responded to Speaker Mike Johnsons post in which he defended Trumps actions and said leaders in Congress were aware of the urgency of the situation though "imminent danger outweighed the time it would take for Congress to act.""Why didnt you call us back from vacation to vote on military action if there was a serious threat to our country?" Massie said in response to Johnsons post.Massies words caught Trumps attention. On Sunday, the president aimed some words back toward the representative."Congressman Thomas Massie of Kentucky is not MAGA, even though he likes to say he is. Actually, MAGA doesnt want him, doesnt know him, and doesnt respect him," Trump wrote on Truth Social.TRUMP EARNS BIPARTISAN PRAISE FOR DECISIVE ACTION AGAINST IRAN'S NUCLEAR PROGRAM"He is a negative force who almost always votes NO, no matter how good something may be. Hes a simple-minded grandstander who thinks its good politics for Iran to have the highest level Nuclear weapon, while at the same time yelling DEATH TO AMERICA at every chance they get."The president restated his case for bombing Irans nuclear facilities, saying Iran has "killed and maimed" thousands of Americans and under the Jimmy Carter administration, even took over the American Embassy in Tehran."We had a spectacular military success yesterday, taking the bomb right out of their hands (and they would use it if they could!) but, as usual, and despite all of the praise and accolades received, this lightweight Congressman is against what was so brilliantly achieved last night in Iran," Trump wrote.'NOT CONSTITUTIONAL': CONGRESS EVOKES NEW WAR POWERS RESOLUTION TO REJECT TRUMP'S STRIKES ON IRAN"Massie is weak, ineffective, and votes NO on virtually everything put before him (Rand Paul Jr.), no matter how good something may be," the president added.Trump also accused Massie of being "disrespectful" to the military and suggested he "drop his fake act" and put America first."MAGA should drop this pathetic LOSER, Tom Massie, like the plague!" Trump said. "The good news is that we will have a wonderful American Patriot running against him in the Republican Primary, and Ill be out in Kentucky campaigning really hard.CLICK HERE TO GET THE FOX NEWS APP"MAGA is not about lazy, grandstanding, nonproductive politicians, of which Thomas Massie is definitely one," Trump continued. "Thank you to our incredible military for the AMAZING job they did last night. It was really SPECIAL!!! MAKE AMERICA GREAT AGAIN."Fox News Digital reached out to Massies office for comment on the matter.