My two remarks (and a half) at the Measure for Measure workshop:
One
The border is that place, or set of procedures, through which the distinction, but also the acquaintance, between value and use-value is arranged. In that sense, the border deliberates upon a kind of dialectic, the filtering of differences by indifference and abstraction, the imposition of measures of both what is useful – as in what particular kinds of skilled labour, and the very definition of skill, that may be useful to any given national economy – and what is different (or indifferent) in an innovatory sense. In this regard, the border is a filter. And, as with the categories of value, the encounter at the border here is an encounter of terms that that are internal to capital.