This was a week for the history books

Most of the time, this is an exaggeration. After all, if every week is a mountain, then there are no molehills. We lose all sense of perspective. By insisting everything is UNPRECEDENTED, it becomes hard for anyone to discern what really matters from what is odd, or abnormal, but not central to the presidency of Donald Trump. (I've struggled with this myself.)

So I'm not going to tell you why this past week was so important. I am going to show you.

First, we had Rudy Giuliani, Trump's lawyer and longtime pal, tell CNN's Chris Cuomo -- with a straight face -- that he never said that no one in the campaign might have colluded with Russians. Which, of course, both he and Trump have said many times.

This sort of goalpost-moving is the result of a series of revelations -- most notably that campaign chairman Paul Manafort had shared polling information with a Russian with ties to the country's intelligence service -- that make it pretty damn clear that something that looks a lot like collusion was going on.

Then came the bombshell from BuzzFeed alleging that special counsel Robert Mueller had evidence that Trump had ordered his one-time personal fixer, Michael Cohen, to lie to Congress about the breadth and depth of his conversations with Russians about the construction of Trump Tower Moscow.

That, if it's accurate (and neither CNN nor any other mainstream outlet has confirmed the BuzzFeed reporting), is a textbook definition of obstruction of justice. Which is a crime.

While Giuliani has insisted that Mueller has told him that Trump cannot be indicted as a sitting president, it is very possible that if the Mueller report shows obstruction of justice, then Trump would almost certainly face the prospect of impeachment from the House and Senate.

The Point: Draw your own conclusion. But if you ask me, this week is one for the history books. 

And now, the week in 20 headlines:

Monday: 

AG nominee: Mueller should be allowed to finish reportTrump: 'I never worked for Russia'Pentagon approves additional military support for borderTrump's legal team rebuffed request for Mueller interviewTrump personally paying for Clemson's fast-food White House meals

Tuesday:

Judge strikes down effort to add citizenship question to Census Trump AG nominee defends record in Senate hearing

Wednesday:

Pence declares ISIS 'defeated' on the same day as Syria attackPelosi asks Trump to move State of the Union addressWH adviser says damage from shutdown is 'worse' than predictedWheeler returns to the Senate for EPA confirmation hearingTrump signs law ensuring shutdown pay for government workersGiuliani says Trump didn't collude but can't say if aides didWSJ: Michael Cohen paid thousands to rig polls in Trump's favor

Thursday:

Cohen says Trump directed him to pay for poll riggingTrump takes on border wall in Pentagon speechBuzzFeed: Sources say Trump directed Cohen to lie to CongressWhite House delegation cancels Davos tripTrump denies Pelosi military aircraft for war zone trip

Friday:

Trump meets North Korea's lead negotiator at White House