The White House refuses to cooperate with the investigation to isolate the US president

The White House has told Congress that it refuses to cooperate with the ongoing investigation into the possible launch of measures to isolate President Donald Trump, saying the investigation lacks constitutional legitimacy.

The White House justified this by saying that Democrats know that President Donald Trump has done nothing wrong, but for purely political reasons and wanting to overturn the 2016 election results, they are using the accountability law to conduct an investigation that ignores the fundamental rights of any American.

The White House's position came after a letter sent by President Donald Trump's adviser Pat Siboloni on Tuesday evening to House Speaker Nancy Pelosi and the chairpersons of the three committees investigating the impeachment trial.

"Your investigation lacks the foundations of constitutional legitimacy or the slightest impartiality," Pat Siboloni said in his letter to Pelosi, adding that under these circumstances, "President Trump will not allow his administration to participate in this biased investigation."

The letter stressed that Democrats threaten executive officials with punishment for simply exercising their constitutional rights and powers, violating civil liberty laws and the principle of separation of powers.

Block the ambassador
The US State Department on Tuesday barred the US ambassador to the European Union, Gordon Sundland, from appearing before a House committee to testify in the Trump investigation.

Sundeland has emerged as one of the key players in Trump's attempt to pressure Ukraine into a corruption probe with Trump's likely opponent in the 2020 presidential election, Democrat Joe Padin and his son, according to CNBC.

The White House recently revealed the contents of a telephone conversation Trump made with his Ukrainian counterpart, Volodymyr Zelinsky, on July 25, to congratulate him on his victory in the presidential elections.

Democrats say Trump has repeatedly pressed Zelinski to investigate reports that Biden, a former vice president, threatened to cut off US aid to Kiev if a prosecutor was not fired because he was investigating a gas company affair linked to Biden's son. .

On more than one occasion, Trump has denied wrongdoing in his relations with the Ukrainian president, stressing that his only goal was to look at corruption.

Trump has accused Biden and his son of involvement in corrupt activities in Ukraine, while Democrats say Trump is trying to discredit Biden before the election.

The investigation of Republican Trump has strong support from House Democrats, but is unlikely to be passed in the Republican-controlled Senate.