He said he had almost sprained his jaw trying to mimic Trump's enunciation.
"I'm not an impressionist, per se, but if you do any kind of comedy and they ask you to do that, most of the time, there's some degree of appreciation, I think, involving somebody you like," Baldwin added.
"Trump is somebody who, I don't hate Trump, but he's not somebody I admire, so it was more difficult."
The actor did make his Trump impression on Friday while speaking at a marketing conference in Boston, Massachusetts.
"I think that Trump is going to be someone who is not going to be that involved, he's going to be going into rooms with trusted advisers and they're going to say, "We did this, this, this, and this," Baldwin began in a video published by the Boston Globe.