And the answer is that in a chronological flow Article II, the obstruction facts precede much of the perjury allegations.

CNN

It seems to me that he's moved from the world of perjury, which is my Article I, into the world of obstruction, which is Cheryl's and David's Article II.

CNN

You will notice that the third and the fourth subject areas correspond to, coincide and overlap with many of the allegations of obstruction of justice in Article II.

CNN

Equally important is the fact that these instances of perjury are also elements of the obstruction of justice charges in Article II.

CNN: Sen. Gorton's closed-door impeachment statement