TEHRAN - Of course, during the upcoming presidential elections in the United States, there will be a lot of criticism from the White House and the U.S. president. This is a matter of great concern to Donald Trump. On the other hand, Democratic Party elections will begin shortly. The common point of all candidates for this election is criticism of Trump's policies.

Bernie Sanders, the old American senator, and one of Democratic nominees for the 2020 presidential election, continues to oppose U.S. President Donald Trump. This confrontation started at the time Trump entered the White House (by early 2017). Sanders called for an end to Washington's support for Riyadh in the Yemeni war. Sanders also condemned Trump's stance on the murder of Jamal Khashoggi. At any rate, Sanders's recent position against Trump has led to the U.S. President's concerns.

Sen. Bernie Sanders says it would be an "impeachable offense" if President Trump were to fire Robert Mueller the special counsel leading the federal probe into ties between Trump campaign associates and Russia.

"I've been very reluctant to talk about impeachment until we have all the information coming in from the investigation. But that would be a major, major, major obstruction of justice. That would be an impeachable offense in my view," Sanders said in an interview for The Intercept's newly launched podcast "Deconstructed" released Friday.

In his tweet, Sanders was referring Jeff Sessions, Trump's Justice Minister, and his forced resignation. Trump fired Attorney General Jeff Sessions, replacing him with a loyalist who has echoed the president’s complaints about the special counsel investigation into Russia’s election interference and will now take charge of the inquiry.

Among all Democrat candidates, Sanders has a lot of motivation to challenge the trump!The fact is, according to polls conducted in 2016, Sanders had a much greater chance of winning the U.S. presidential elections. Many Democratic voters believed that Sanders could have an important role in regulating power in America as a symbol of change in the United States. Although such an idea was wrong due to the political structure in the U.S., it was, however, strongly accepted by some Democrat supporters.

On the other hand, Hillary Clinton, the Democratic candidate who was supported by her husband, Bill Clinton, and many influential figures in the party, managed to defeat Sanders with her secret lobbies, and went to fight Trump as Democrats' final candidate. Anyhow, if Sanders were to reach the final round of the 2016 presidential competitions, he could have defeated Trump and enter the White House. Sanders, however, was the victim of Democrat leaders and Hillary Clinton's secret lobbies. It was not without a reason that many Sanders advocates voted for Hillary Clinton's rival, Donald Trump!

Ultimately, the tensions between Trump and Sanders in the U.S. presidential election of 2020 will be of great interest to many Americans. If the Sanders win in the Democratic Party, this conflict will become more intense and more serious. A topic that the president of the United States and his entourage are scared of.