After all, breaking the joint liability presumption is tough and often requires going to court.

FORBES: Kinder Gentler IRS Lifts Innocent Spouse Barrier

Breaking that joint liability presumption is hard and often requires the expense of going to court.

FORBES: IRS To Give Innocent Spouse A Facelift

The Joint Council for the Welfare of Immigrants (JCWI) wants the government to scrap the test - it says that breaking up families is more damaging than some migrants not speaking English.

BBC: Does migrants' English test split families?