It’s not yet clear how much of Robert Mueller’s final report the Trump administration will allow to be released, but House Intelligence Committee Chairman Adam Schiff (D-Calif.) said Friday night that he wants Congress to see more than just the report. Schiff said he would use subpoena power to make sure that all of the evidence Mueller collected—which may be far more revelatory than the basic report that was turned over to the Justice Department Friday evening—is released. The report likely focuses on Mueller’s decisions on whether to prosecute people for breaking laws, Schiff said in a statement on Twitter, but the underlying evidence may be valuable as well because it would show whether President Donald Trump, or anyone else in his administration, was compromised, even if they themselves broke no laws.