We already know that the special prosecutor investigating possible ties between the Trump campaign and Russia in last year’s election is examining a broad range of transactions involving Trump’s businesses as well as those of his associates. Mueller is looking at the Russian purchases of apartments in Trump's buildings, Trump’s involvement in a controversial SoHo development in New York with Russian associates, the 2013 Miss Universe pageant in Moscow and Trump’s sale of a Florida mansion to a Russian oligarch in 2008. We know a search warrant was obtained and the FBI raided Paul Manafort's home in the early morning hours, and that this has now become a criminal investigation. Two days ago we learned that Mueller is questioning how much Trump knew about Junior’s 2016 meeting with Kremlin-linked lawyers at Trump Tower and if the President sought to hide the purpose of that meeting, NBC reports. Trump has denied knowing about the matter until it was revealed by The New York Times. Conversely, the President did, however, help draft his son’s statement to the press in response to reports about the meeting, according to The Washington Post. “Even if Trump is not charged with a crime as a result of the statement, it could be useful to Mueller’s team to show Trump’s conduct to a jury that may be considering other charges,” an unnamed source said. Making matters worse for Trump, Junior agreed to sit down for a transcribed interview with the Senate judiciary committee in a closed hearing, as investigators continue to dig into his attendance at a 2016 meeting where he was promised Russian dirt on the Clinton campaign. After the Senate judiciary committee invited him to attend a July hearing to testify in public, Junior instead cut a deal with the committee to avoid that session. It's unclear if he will eventually testify publicly, but committee leaders have said an open session with Junior is still on the table. Prediction: It is not going to happen. The Republican Congress is playing fast and loose with all the evidence against the Republican President, keeping it away from the prying eyes of the public. There is no reason to believe that policy will end any time soon. Why the secrecy? If there is nothing to hide as Trump claims, what is the Republican Senate hiding. Obviously, there is something Trump prefers to remain hidden and the Senate is cooperating. This will not escape the purview of the special prosecutor. In that vein, Mueller has issued subpoenas to a former lawyer for Paul Manafort and to Manafort's current spokesman, an aggressive tactic that suggests an effort to add pressure on the former Trump campaign chairman, who, along with Junior, attended that meeting with the Russians in Trump Tower. The subpoenas seeking documents and testimony were sent to Melissa Laurenza, an attorney with the Akin Gump law firm who until recently represented Manafort, and to Jason Maloni, who is Manafort's spokesman. Manafort has not been accused of any wrongdoing. He and the others will be unable to plead the Fifth. All of this does not bode well for Trump.