Republican South Carolina Senator Lindsey Graham intends to challenge the subpoena he was issued by the Atlanta-area special grand jury investigating former US President Donald Trump over his attempts to overturn the 2020 election in Georgia, Graham's attorneys said Wednesday.

"Senator Graham plans to go to court, challenge the subpoena, and expects to prevail," attorneys Bart Daniel and Matt Austin said in a statement.

The pair also said that in their "conversations with Fulton Country investigators," they have been informed that Graham was "neither a subject nor a target" in the probe, explaining that he was merely a witness in the case raised against Trump.

"This is all politics. Fulton County is engaged in a fishing expedition and working in concert with the January 6 Committee in Washington," they added, noting that any information obtained from Graham would be directly and immediately shared with the January 6 Congressional committee.

As Chairman of the Senate Judiciary Committee, Daniel and Austin said, Graham had the full right to "discuss with state officials the processes and procedures around administering elections."

The Fulton County special grand jury wants to hear from Graham because he reportedly made two calls to Georgia's Secretary of State Brad Raffensperger and his staff following the election and President Joe Biden's win against his Republican counterpart.

Graham also made claims about there being voter fraud in the election, the filing said, which were debunked in the wake of the election and mounting allegations in that regard.

"Should witnesses choose to challenge an order that they testify before the Special Purpose Grand Jury, the District Attorney will respond in the appropriate court to compel their appearance," Deputy District Attorney Jeff DiSantis stressed.

An official that embarked on the same path is former Trump aide Mark Meadows. He refused to testify for the Capitol riots and he was up against the ropes after US lawmakers sought to hold him in contempt for rejecting to testify before the January 6 panel.

The January 6 Capitol riots case the US Government has been looking into is amassing many more testimonies from various figures and individuals. One of the latest testimonies came from former White House aide Cassidy Hutchinson gave a devastating testimony against Trump, according to a member of the House committee investigating the insurrection.

Her testimony, according to several legal experts, is potentially problematic for Trump.

Following news of his loss in the 2020 election against Biden, Trump went on a spree of promoting a narrative that suggested that the elections were "stolen" from the Republicans by the Democrats via voter fraud, calling the elections fraudulent and calling on the American people to defend "US democracy".

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