US President Donald Trump has vowed to fight all the way to the Supreme Court, against any attempts to impeach him.
This comes after Democrats in Congress launched new investigations into the president.
Congress remains the only body with control over any impeachment proceedings in the US.
Democrats remain divided on whether to proceed with Trump's impeachment after Special Counsel Robert Mueller's Russia inquiry.
Al Jazeera's Kimberly Halkett reports from Washington, DC.