President Trump headlined a rally in the key swing state of Pennsylvania on a momentous day in his presidency Tuesday, after House Democrats unveiled two articles of impeachment against him, even as they also handed him a breakthrough political victory by finally approving his new trade deal to replace the North American Free Trade Agreement (NAFTA).

"Congress will soon vote on my new trade deal," Trump announced at the rally, noting that House Speaker Nancy Pelosi, D-Calif., "did it on the same day they announced they are going to impeach the 45th president of the United States, and your favorite president. And, the reason they announced it on the same day, one hour later, they announced impeachment ... you know why? It plays down the impeachment, because they're embarrassed by impeachment, and our poll numbers have gone through the roof because of her stupid impeachment."

Trump added: "The silver lining of impeachment and this witch hunt, that's the reason they approved USMCA," a reference to the U.S.-Mexico-Canada Agreement. Numerous polls have shown declining support for impeachment in key swing states. For example, impeachment and removal is opposed by 50.8 percent of voters in Michigan, 52.2 percent of voters in Pennsylvania, and 57.9 percent of voters in Wisconsin, according to the Firehouse/Optimus December Battleground State Poll.

House Intelligence Committee Chairman Rep. Adam Schiff, D-Calif., is a totally "crooked bastard" for his handling of the impeachment probe and Russia inquiry, Trump said. Schiff had suggested for years that he was privy to evidence that Trump's campaign had illegally conspired with Russians, and recently apologized for falsely stating that his panel had no advance contact with the purported whistleblower at the center of the impeachment inquiry.

Before leaving the White House, Trump previewed his rally speech, saying Democrats were "embarrassed" by the introduction of articles of impeachment against him. In the evening, he argued again that's why Democrats finally announced earlier Tuesday they supported USMCA, the modernization of NAFTA that the president made the top legislative priority of the year.

"They were very embarrassed by it," Trump claimed to reporters. "That's why they brought up USMCA an hour after."