(CNN) - President Trump is expected to retain a private attorney surrounding the inquiry into his campaign's alleged ties to Russia.
A senior administration official said that the president would ask attorney Marc Kasowitz to represent him during the investigation.
According to a biography posted on his firm's website, Kasowitz has represented Trump on a "wide range of litigation matters for over 15 years."
The decision to retain him comes as multiple congressional probes dig into the Trump campaign's contact with Russians, as well as an FBI investigation.
Some democrats are calling for Trump's impeachment, after news of a memo from former FBI Director James Comey implied Trump asked Comey to end an investigation into former national security advisor Michael Flynn.
CNN reported last week that White House lawyers have even been researching impeachment procedures in order to prepare for such a possibility.
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