Paragraphs that begin with a colon

Looking at punctuation is difficult because copy editors freely change punctuation, adding or removing it to obscure the author's original intent. 

There are many uses of the colon in the op-ed that parallel uses in Rosen's writings, but they are not particularly distinctive. However, there is one use of a colon in the op-ed I think is worth paying attention to. In this usage, a paragraph begins with a short phrase followed by a colon:

Take foreign policy: In public and in private, President Trump shows a preference for autocrats and dictators

The National Affairs article has a paragraph with a very similar beginning:

Here is how it would work: A regulatory-budgeting process would involve multiple steps, analogous to the fiscal-budget process.

As does a blog post:

Another interesting wrinkle: As with the earlier NLRB rule, the EPA rules that are the subject of the resolutions of disapproval

As does Rosen's prepared remarks for the Transportation Committee:

Amtrak, however, presents all of us with a problem:  Amtrak’s revenues from ticket sales this year will not cover even 50%

Another sentence in National Affairs article is noteworthy:

The answer is nothing: No such budget exists.

Because it parallels so closely a sentence in the op-ed:

I would know. I am one of them.