IMPEACHABLE CRIMES OF TRUMP TO DATE (the ones we have enough evidence/confession/admission by central parties without the need for formal investigation):
1) Direct violation of Emoluments requirements of the presidency. [Title of Nobility Clause, Article I, Section 9, Clause 8 of the U.S. Constitution]
2) Felony Witness intimidation of a civilian - Sally Yates just hours prior to her Senate hearing. [18 U.S. Code § 1512]
3) Potential retaliation against a whistleblower - Same. [Whistleblower Protection Act of 1989]
4) Blackmailing a private citizen - Tweeted threat to Comey after he was fired. [18 U.S. Code § 873]
5) Felony Witness intimidation - Tweeted threat to Comey. [18 U.S. Code § 1512]
6) Obstruction of justice - Asking for loyalty pledge. [18 U.S. Code §1503]
7) Conspiracy to commit Obstruction of Justice - multiply by the number of people who have ACCEPTED the alleged Trump loyalty pledge. [18 U.S Code §1503]
8) Obstruction of Justice - Lying about there being no Russia investigation. [18 U.S. Code §1503]
9) Obstruction of Justice/Conspiracy - Trump asking Sessions and Rosenstein (deputy AG) to create and give him the document he later cited as his principle reason for firing Comey. [18 U.S. Code §1503]
10) Obstruction of Justice - Firing James Comey while he was actively investigating Trump Russia ties. [18 U.S. Code §1503]
11) Encouraging ESPN to fire contributor who criticized him. [18 U.S. Code § 227]
12) Encouraging the NFL to fire players for exercising their twice-affirmed First Amendment right to protest. [18 U.S. Code § 227]
13) Insider trading - tipping off Icahn about his tariffs. (SEC Rule 10b-5-1)
Honorable mention: Himself, his kids and Jared Kushner committing perjury/forgery on federal applications for security clearances by omitting Russia connections. [18 U.S. Code § 1001]