Meghan McCain fires back at President Trump for mocking, belittling 'last in his class' John McCain

Despite the death of Sen. John McCain (R-Ariz.) last August, President Donald Trump twice targeted McCain on social media over the weekend, earning a swift rebuke from conservative commentator Meghan McCain, the late senator's daughter.

Why did Trump attack McCain?

Trump's latest attacks come amid reports revealing the role that McCain played in the dissemination of the "Trump dossier," a document filled with salacious and unverified claims about Trump compiled by former British spy Christopher Steele.

Newly unsealed court documents revealed the FBI first received its copy of the dossier from McCain in December 2016, Fox News reported.

As the New York Post explained, McCain, in his final book, defended his actions:

In his book, " The Restless Wave: Good Times, Just Causes, Great Fights, and Other Appreciations," McCain defended releasing the dossier and said he would do it again.

"I had no idea which if any were true," McCain said in the book. "I could not independently verify any of it, and so I did what any American who cares about our nation's security should have done."

What did Trump say?

On Saturday, Trump echoed Ken Starr, the former U.S. attorney who led the investigation into former President Bill Clinton during Clinton's presidency, in calling the dossier a "stain" on McCain's legacy.

But Trump did not stop there. On Sunday, Trump referred to McCain as "last in his class John McCain," and claimed he worked together with Democrats to spread the unconfirmed dossier allegations.

How did Meghan McCain respond?

In a response on Saturday, McCain urged the president to spend his weekend with his family instead of "obsessing" over hers.

McCain's tweet was very well-received, garnering nearly 100,000 "likes" by Sunday afternoon.