The move, which generated headlines around the world, didn't appear to sit too well with The Project co-host Waleed Aly when it came up during Tuesday night's episode of the news program.
As he took to the stage in NY to introduce a performance by Bruce Springsteen, the Oscar winning screen icon began a furious attack on the US President. Aly asked after the footage was replayed on screen.
But De Niro stepped up to the mic and made a decision to get one thing out of the way first.
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"F**k Trump" he told the adoring audience.
American viewers watching the Tonys at home only heard silence - the broadcast on CBS bleeped De Niro's expletive-heavy intro - but they saw the audience's largely enthusiastic reaction, the Associated Press reported. "Even more important in these perilous times, you rock the vote".
At the Tony awards, De Niro launched an expletive at Trump and pumped his arms like a boxer for emphasis.
At a promotional event for a Nobu restaurant and hotel, De Niro said, "I just want to make a note of apology for the idiotic behavior of my president".
Although many people in attendance at the Tony Awards showed support to De Niro, some celebrities took to Twitter to express their disapproval towards the man's harsh words. "I'd like to punch him in the face!"