Khizr Khan, the Gold Star father who took on President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE during a speech at the 2016 Democratic National Convention, on Monday criticized Trump for attacking the late Sen. John McCain John Sidney McCainCindy McCain endorses Biden: He's only candidate 'who stands up for our values' Biden says Cindy McCain will endorse him Biden's six best bets in 2016 Trump states MORE (R-Ariz.).

During an interview on ABC's "The View" with McCain's daughter, Meghan McCain, Khan called Trump a "Russian-tainted president" and said the U.S. has "been elevated" because of McCain.

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“How dare this Russian-tainted president disrespects our hero? Senator McCain has meant so much to this nation because of his sacrifice, because of his family’s sacrifice and service. We have been elevated because of his family and Senator McCain," Khan said.

Gold Star father Khizr Khan tells @MeghanMcCain how his final conversation with his son was about John McCain’s book "Why Courage Matters," and suggests President Trump read it to “learn to take care of those who have sacrificed so much” https://t.co/peynFM2Q4e pic.twitter.com/Xo4I59GqgM — ABC News Politics (@ABCPolitics) March 25, 2019

Khan also recommended that Trump read part of McCain's book, "Why Courage Matters: A Way to a Braver Life."

“This president forgot to read the chapter that teaches how to be commander in chief of the United States. Somebody should read it to him … so that he could learn to take care of those who have sacrificed so much," Khan said.

Meghan McCain thanked Khan for his "bravery and kind words" in a tweet Monday.

Thank you for your bravery and kind words Mr. Khan. Your family is an inspiration - it was an honor to have you @theviewabc today. pic.twitter.com/a7IVKz2fTg — Meghan McCain (@MeghanMcCain) March 25, 2019

Trump several times last week attacked the late Arizona senator, who died last year. The president went after McCain in a series of tweets, told reporters that he "was never a fan of John McCain and I never will be" and complained during a White House event about not receiving a “thank you” for approving the senator's funeral arrangements.

Trump also previously sparred with Khan, who during his 2016 speech said Trump “consistently smears the character of Muslims." Trump responded by saying in an interview that Khan, who is the father of a slain Muslim soldier, gave the entire speech because the solider's mother wasn't "allowed" to speak.