(CNN)Donald Trump’s political career was birthed of a conspiracy theory: The much-debunked idea that Barack Obama was not born in the United States.

Trump, beginning around 2011, seized on the issue — which had been percolating in the fever swamps on the far right since Obama won — and used it to cast himself as the lone voice among conservatives willing to stand up to Obama (and political correctness).

That the whole thing was, wait for it, a totally false conspiracy theory was beside the point for Trump. It proved useful to him, so he used it.

Given that origin story, we shouldn’t be terribly surprised that Trump’s willingness to engage in conspiracy theories as a candidate has continued since he entered the White House.

The first tweet deals with MSNBC parting ways with host Greta van Susteren. Van Susteren, in a series of tweets, offered no evidence that she left because of any pressure from the bosses that she be more anti-Trump.

The second deals with 27 states rejecting or raising doubts about requests for data from voter rolls made by the Presidential Advisory Commission on Election Integrity. The objections to providing that information have been bipartisan, with secretaries of state and governors expressing worries about states’ rights as well as the possibility that the information could be used to make a case they don’t believe exists for widespread voter fraud.

And the final tweet deals, I think, with a story dealing with Russia that…