White House press secretary Sarah Huckabee Sanders refused to answer questions about President Donald Trump’s former associates — Paul Manafort and Michael Cohen — becoming felons, repeating six times at Wednesday's briefing: “The president has done nothing wrong, and there are no charges against him.”
This is disingenuous because it implies that sentence phrase part A "the president has done nothing wrong" is a result of part B "there are no charges against him." In fact these are two completely separate clauses that are not dependent on each other. And repeating them 6 times doesn't change that.
One might say that lying to the media and the US people as President is, indeed, something wrong. One might say that directing your lawyer to pay off the books hush money and violating campaign finance laws is, indeed, something wrong. Charges or no.
As to "no charges against him", this is due to a long standing Justice Department policy not to allow (frivolous) charges against a sitting President. She may regret those words as we have a new special prosecutor law that might well be tested. The new law was instigated under Bush 2, but not needed under his Republican or Obama's Democratic administrations. It is being tested now.
If the special prosecutor finds illegal conduct, particularly illegal conduct that is serious, s/he has the option to bring criminal charges. In order to do this, s/he would ask the Attorney General - in this case acting Attorney General Rod Rosenstein - for the permission to bring charges. This triggers a required action. If the AG allows charges, they are filed. If the AG does not allow charges (this being a case where the AG is protecting the President) a mandatory report gets filled with Congress and the media.
The design of this was to allow transparency in the process, but rein in the special prosecutor's office that ran roughshod over the Reagan, Bush 1 and Clinton Presidencies.