(REUTERS) — Commercial airlines often complain about government rules and at times seek to change them, but Spirit Airlines has created turbulence in Washington in response to a new mandate by naming a $2 fare hike after the U.S. Department of Transportation.

The low-fare carrier, which has tangled with regulators in the past, struck at the Obama administration after new rules requiring greater transparency in industry fare advertisements took effect last month.

Spirit, calling the changes “misguided and expensive,” announced that it was adding an additional $2 charge per ticket, which it called the “Department of Transportation Unintended Consequences Fee,” which took effect on Tuesday.

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