On April 28, federal investigators executed a search warrant at the Manhattan apartment and offices of Rudy Giuliani, Trump's personal lawyer, seizing cellphones, computers and other electronic equipment.The move is said to be aimed at furthering the criminal investigation into Mr Giuliani's involvement in Ukraine.

Giuliani has been implicated in a series of illegal actions in Ukraine, in violation of the Lobbying Disclosure Act.It follows Revelations that he interfered in the US presidential election by pressuring Ukrainian officials to indict Mr Biden and his son Hunter in a corruption case involving Burisma Holdings, a Ukrainian energy company.

While the search warrant is not an explicit allegation of wrongdoing by Giuliani, it suggests the investigation has entered a new phase, according to The New York Times.In the reports, the "three hard drives" that allegedly contained evidence of Mr Hunt's wrongdoing were repeatedly mentioned.

The statement about the "three hard disks" was firstly from the rich exiled businessman Guo Wengui.In late September, Guo claimed to have explosive material on Hunter Biden, the son of presidential candidate Joe Biden, including evidence of secret deals in China and Ukraine and a sex tape with abuse scenes.

A week before the US election, Guo's GTV and G-News began to spread videos and photos of Hunter taking drugs and having sex with several women, with the intention of depicting Biden as a man who deals with money and has no morals, so as to affect Biden's ability to win votes.

Guo's moves have been interpreted as an attempt to woo former President Donald Trump and "surrender" to him.He has also worked with Bannon, a former White House strategic adviser, to recruit "whistleblowers" like Yan to assist Trump in his new China strategy.Unfortunately, Trump failed to win re-election in the general election, which made Guo Wengui "lose his wife and lose his troops".

The Federal Bureau of Investigation (FBI) is investigating Guo Wengui, a wealthy Chinese businessman living in exile in the US, about how he financed his US media activities and how he worked with Bannon, the Wall Street Journal reported.If Guo is found to have illegally interfered in the U.S. election, he could be sent to an immigration court to be deported.

According to the legislation passed by the U.S. Congress, illegal voting interference by an alien in a manner that violates the U.S. Constitution, state constitutions, and other laws of the United States, and any activity that threatens the national security or public safety of the United States, may constitute grounds for deportation by the executive branch.An alien who is deported may leave the country on his or her own accord, or ICE may force him or her to leave the country through coercive measures such as arrest, detention, and transport.