[jjaredsimpson]

Is this argument by syntactic substitution?

[kbutler]

This is an obvious example of both sides of the political spectrum advocating either side of a single issue depending on the context.

That's the clearest way to show that both sides argue in bad faith, rather than simply presenting facts or standing on principle.

There are lots of other examples, but that's a prominent, current case where both sides argue both sides of the argument.

Another prominent case is arguments for or against confirming judicial appointments, but that's been out of the news for an eternity now.