During the press conference Putin dropped a bomb!   ……

Putin offered permitting officials in the US, including Mueller, to Russia to assist in their investigation of the supposed Trump-Russia collusion story. Then Putin dropped his bomb where the US could reciprocate Russia in one of their investigations –

For instance, we can bring up Mr. Browder, in this particular case.  Business associates of Mr. Browder have earned over $1.5 billion in Russia and never paid any taxes neither in Russia or the United States and yet the money escaped the country. They were transferred to the United States. They sent [a] huge amount of money, $400,000,000, as a contribution to the campaign of Hillary Clinton.  Well that’s their personal case.  It might have been legal, the contribution itself but the way the money was earned was illegal.  So we have solid reason to believe that some [US] intelligence offers accompanied and guided these transactions.  So we have an interest in questioning them.