Russian Interference Refuted.

It's really easy.

Hillary Clinton won the popular vote. Hillary Clinton won the popular vote with 65,853,516 (48.5% votes) to Trump's 62,984,825 (46.4% votes) Clinton's margin  of victory in the popular vote was larger than John Kennedy's and Richard Nixon's, I've seen a statistic that her popular vote margin was the third largest in US elections!
Multiple candidates in American history have been elected president with far smaller margins than Clinton's in the popular vote. According to figures from the Atlas of U.S. Presidential Elections—and as alluded to by one Atlantic reader—they include:

James Garfield in 1880: 0.09 percentage points John F. Kennedy in 1960: 0.17 percentage points Grover Cleveland in 1884: 0.57 percentage points Richard Nixon in 1968: 0.7 percentage points James Polk in 1844: 1.45 percentage points

Since the final vote count did, indeed, put her well above 2 percentage points ahead of Trump, her margin went beyond those of winning presidential nominees Jimmy Carter in 1976 (2.07 percentage points) and George W. Bush in 2004 (2.47 percentage points). And all this is not to mention the presidents who’ve been elected without winning the popular vote at all. That’s a list that includes Bush in 2000, and Trump.

2,868,686
That is the number of popular votes that Hillary Clinton had over Donald Trump. It was a number that was 2.1% more of the popular vote than Donald Trump won.
That is a number which is larger than the population of 16 States and District of Columbia (Nevada, New Mexico, Nebraska, West Virginia, Idaho, Hawaii, Maine, New Hampshire, Rhode Island, Montana Delaware, South Dakota,   Alaska, North Dakota, District of Columbia, Vermont, and Wyoming). It is slightly less than the populations of 4 States: Mississippi, Arkansas, Kansas, and Utah). It is slightly more than the combined populations of Alaska, North Dakota, District of Columbia, Vermont, and Wyoming (2,578,472).
It's also a number which is larger than most of the 100 largest US Cities (Only NYC and LA have a larger population).
Now, given that Hillary Clinton won the popular vote by a significant margin: How did Donald Trump become President?
Russian Interference?
The Electoral College?
It was the Electoral College that made Trump President, not any foreign interference.