The FBI has raised questions about the accuracy of a secret Congressional memo written by top Republicans and members of the House intelligence committee that suggests the agency and Department of Justice abused their power for political purposes in the 2016 presidential election.

The White House intends to release the classified document that contains allegations of anti-Trump bias.

Democrats argue it is all part of a wider effort by Republicans and the White House to undermine the Mueller investigation by continually raising questions about its fairness.

Al Jazeera's Kimberly Halkett reports from Washington, DC.