In times past, Trump would be on his way to impeachment.

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5. There were a lot of disclosures before the impeachment resolution was voted

The Watergate break-in occurred in September 1971. Some of the things that occurred between then and the summer 1974 impeachment resolution included:
February-March 1973: During confirmation hearings begin for L. Patrick Gray as permanent Director of the FBI, Gray reveals that he had complied with an order from John Dean to provide daily updates on the Watergate investigation, and also that Dean had "probably lied" to FBI investigators.
March 17, 1973: Watergate burglar James McCord writes a letter to Judge John Sirica, claiming that some of his testimony was perjured under pressure and that the burglary was not a CIA operation, but had involved other government officials, thereby leading the investigation to the White House.
April 6, 1973: White House counsel John Dean begins cooperating with federal Watergate prosecutors.
April 27, 1973: L. Patrick Gray resigns after it comes to light that he destroyed files from E. Howard Hunt's safe. William Ruckelshaus is appointed as his replacement.
April 30, 1973: Senior White house administration officials John Ehrlichman, H. R. Haldeman, and Richard Kleindienst resign; John Dean is fired.
May 17, 1973 : The Senate Watergate Committee begins its nationally televised hearings.
May 19, 1973: Independent special prosecutor Archibald Cox appointed to oversee investigation into possible presidential impropriety.
June 3, 1973: John Dean tells Watergate investigators that he has discussed the cover-up with Nixon at least 35 times.
July 13, 1973: Alexander Butterfield, former presidential appointments secretary, reveals that all conversations and telephone calls in Nixon’s office have been taped since 1971.
July 23, 1973: Nixon refuses to turn over presidential tapings to Senate Watergate Committee or the special prosecutor.
October 20, 1973: "Saturday Night Massacre" - Nixon orders Elliot Richardson and Ruckleshouse to fire special prosecutor Cox. They both refuse to comply and resign. Robert Bork considers resigning but carries out the order.
November 1, 1973: Leon Jaworski is appointed new special prosecutor.
November 17, 1973: Nixon delivers "I am not a crook" speech at a televised press conference at Disney World (Florida).
January 28, 1974: Nixon campaign aide Herbert Porter pleads guilty to perjury.
February 25, 1974: Nixon personal counsel Herbert Kalmbach pleads guilty to two charges of illegal campaign activities.
March 1, 1974: Nixon is named as an unindicted co-conspirator in an indictment against seven former presidential aides.
March 4, 1974: "Watergate Seven" indicted.
April 5, 1974: Dwight Chapin convicted of lying to a grand jury.
April 7, 1974: Ed Reinecke, Republican lieutenant governor of California, indicted on three charges of perjury before the Senate committee.
April 16, 1974: Special Prosecutor Jaworski issues a subpoena for 64 White House tapes.
April 30, 1974: White House releases edited transcripts of the Nixon tapes, but the House Judiciary Committee insists the actual tapes must be turned over.
May 9, 1974: Impeachment hearings begin before the House Judiciary Committee.
June 15, 1974: Woodward and Bernstein's book All the President's Men is published by Simon & Schuster
July 24, 1974: United States v. Nixon decided: Nixon is ordered to give up tapes to investigators.

In other words, if you're expecting impeachment proceedings against Trump in the near term, don't rely on the Nixon precedent.