Wow, I’m a little surprised at all the negativity, his Wiki is very interesting and impressive in some ways.
“In 2017, he became the first sitting senator to testify against another when he testified against Attorney General nominee Jeff Sessions during his confirmation hearing. In April 2018, following the FBI raid on the offices of Michael Cohen–U.S. President Donald Trump’s personal attorney–Booker together with Chris Coons, Lindsey Graham, and Thom Tillis, introduced the Special Counsel Independence and Integrity Act to limit the executive powers of Trump.”