The investigation of Giuliani began under Trump's Department of Justice, and has continued (like all investigations) through the change of administration. So that's pretty bipartisan.
CNN reports that the raids on Giuliani’s Madison Avenue apartment and Park Avenue office have “left allies of the former president feeling uneasy about what could come next,” according to sources close to Trump. “This was a show of force that sent a strong message to a lot of people in Trump’s world that other things may be coming down the pipeline,” one adviser told CNN. According to that person, the seizing of Giuliani’s electronic devices has “ignited a sense of fear” inside Trump’s orbit “that Justice Department officials may be more willing to pursue investigations of the 45th president or his inner circle than many Trump allies had previously believed.”
and also:
And speaking of Trump’s inner circle, last week his former “fixer,” Michael Cohen,claimed that Giuliani would ultimately turn on Trump to save himself. And not just Trump, but the entire family. “There’s no doubt that [Giuliani is] nervous…. And it’s rightfully so that he’s nervous, because he knows the power of the SDNY is unlimited, and they use that power,” Cohen said. Noting that Giuliani presumably “has no interest in going to prison and spending the golden years of his life behind bars,” Cohen said, “Do I think Rudy will give up Donald in a heartbeat? Absolutely. He certainly doesn’t want to follow my path down into a 36-month sentence.” He added: “What’s ironic here is the fact that these tactics of the Southern District of New York, in terms of bullying you into a plea deal, were created by Rudy Giuliani going back 30 years ago. And it’s just ironic that the tactics that he created for that office are now going to be employed against him, in terms of making him plead guilty and, certainly, at the least, turning over information about Jared, Ivanka, about Don Jr., about Donald himself, about all of these individuals in that garbage can orbit of Donald Trump.”
CNN reports that the raids on Giuliani’s Madison Avenue apartment and Park Avenue office have “left allies of the former president feeling uneasy about what could come next,” according to sources close to Trump. “This was a show of force that sent a strong message to a lot of people in Trump’s world that other things may be coming down the pipeline,” one adviser told CNN. According to that person, the seizing of Giuliani’s electronic devices has “ignited a sense of fear” inside Trump’s orbit “that Justice Department officials may be more willing to pursue investigations of the 45th president or his inner circle than many Trump allies had previously believed.”
and also:
And speaking of Trump’s inner circle, last week his former “fixer,” Michael Cohen,claimed that Giuliani would ultimately turn on Trump to save himself. And not just Trump, but the entire family. “There’s no doubt that [Giuliani is] nervous…. And it’s rightfully so that he’s nervous, because he knows the power of the SDNY is unlimited, and they use that power,” Cohen said. Noting that Giuliani presumably “has no interest in going to prison and spending the golden years of his life behind bars,” Cohen said, “Do I think Rudy will give up Donald in a heartbeat? Absolutely. He certainly doesn’t want to follow my path down into a 36-month sentence.” He added: “What’s ironic here is the fact that these tactics of the Southern District of New York, in terms of bullying you into a plea deal, were created by Rudy Giuliani going back 30 years ago. And it’s just ironic that the tactics that he created for that office are now going to be employed against him, in terms of making him plead guilty and, certainly, at the least, turning over information about Jared, Ivanka, about Don Jr., about Donald himself, about all of these individuals in that garbage can orbit of Donald Trump.”
CNN reports that the raids on Giuliani’s Madison Avenue apartment and Park Avenue office have “left allies of the former president feeling uneasy about what could come next,” according to sources close to Trump. “This was a show of force that sent a strong message to a lot of people in Trump’s world that other things may be coming down the pipeline,” one adviser told CNN. According to that person, the seizing of Giuliani’s electronic devices has “ignited a sense of fear” inside Trump’s orbit “that Justice Department officials may be more willing to pursue investigations of the 45th president or his inner circle than many Trump allies had previously believed.”
and also:
And speaking of Trump’s inner circle, last week his former “fixer,” Michael Cohen,claimed that Giuliani would ultimately turn on Trump to save himself. And not just Trump, but the entire family. “There’s no doubt that [Giuliani is] nervous…. And it’s rightfully so that he’s nervous, because he knows the power of the SDNY is unlimited, and they use that power,” Cohen said. Noting that Giuliani presumably “has no interest in going to prison and spending the golden years of his life behind bars,” Cohen said, “Do I think Rudy will give up Donald in a heartbeat? Absolutely. He certainly doesn’t want to follow my path down into a 36-month sentence.” He added: “What’s ironic here is the fact that these tactics of the Southern District of New York, in terms of bullying you into a plea deal, were created by Rudy Giuliani going back 30 years ago. And it’s just ironic that the tactics that he created for that office are now going to be employed against him, in terms of making him plead guilty and, certainly, at the least, turning over information about Jared, Ivanka, about Don Jr., about Donald himself, about all of these individuals in that garbage can orbit of Donald Trump.”