Millions of us have been lamenting the presidency of Donald J. Trump since the moment he took the oath of office on Jan. 20, 2017.

It’s been a serious downer damn near every step along the way. Here, though, is some news that might bring the hint of a smile to your puss. This upcoming election will be Trump’s final campaign for the presidency.

Yep, win or lose, this is it! The U.S. Constitution — despite Trump’s public ruminations to the contrary — sets in stone that presidents can be elected to just two full terms in office. The Imbecile in Chief managed to get elected to that first term in 2016. He wants a second term … over my strongest objection imaginable.

Joe Biden must defeat him. How that will occur remains a work in progress.

Might a defeated Donald Trump seek another public office? Oh, sure. I suppose he can do that. The presidency, though, appears to be out of the question if Joe Biden is able to do what I hope he is able to do on Election Day 2020.

Having revealed a snippet of cheer for us to ponder as we gird for this campaign, I also feel the need to remind us of what is about to unfold. If you thought the 2016 campaign for president was as low as it could get, well I want to tell you that 2020 is likely to make the Donald Trump-Hillary Clinton scrap resemble a Girl Scout cookie sale.

Donald Trump is as ruthless an individual as any of us have ever witnessed in public life. He has no conscience, which means he lies without understanding the consequence he might suffer. He doesn’t care. He is not equipped with an ounce of shame.

So when he accuses Biden of committing crimes while serving as vice president during the Barack Obama administration, he does so blindly and with no thought to the defamatory nature of what flies out of his mouth. He will do the same thing with President Obama, just as he did for years fomenting the “birther” lie that Obama was not qualified to run for president.

We need to get ready for what is to come. The good news is that this will be the final time we’ll have to listen to this idiot’s campaign pitch. The best news will occur if Joe Biden emerges victorious from the campaign carnage that will ensue.