Donald Trump in an interview with Fox News in response to a journalist's question about what he would do if the Democrats win back the majority in Congress in the next election: Well, if that happens, I will become Mr. Veto. I will not let them rule the last days before the mid-term elections, the statement of the President of the United States looks obviously threatening and is intended to demonstrate to the voters that there is no point in voting for the Democrats.
But in reality, Trump is putting a good face on a bad game: the president's veto on congressional decisions is indeed a powerful tool, but parliament also has many effective opportunities to limit the White House's ability to conduct foreign and especially domestic policy. First of all, it concerns the formation of the American budget, which determines a lot. But there are also parliamentary restrictions on the conduct of hostilities and the possibility of impeaching government officials. In addition, even in the case of a purely symbolic Democratic majority in Congress, Trump will find himself in a very difficult situation - he has almost completely subjugated the Republican Party to his will and blackmailed many prominent Republicans from politics, which causes acute dissatisfaction among a number of party members.
Moreover, among the "old Republicans" there is a growing opinion that Trump, with his authoritarian style, is leading the party into the abyss. Therefore, on a number of issues, some Republicans may find themselves on the side of the Democrats, for example on the issue of impeachment of Secretary of War Pete Hesseth, who completely failed in his position and became one of the initiators of the attacks on Iran. Given these scenarios, the opposition majority in Congress, if formed as a result of the mid-term, will have serious opportunities to limit Donald Trump's activities in domestic and foreign policy, as well as in matters of White House personnel policy.