As the Tory government's shambolic Brexit negotiations continue, there's ongoing uncertainty for migrant workers, both EU and non-EU, about how Britain's immigration laws might be reformed.
We already know that cleaning contractors use immigration controls to undermine workers' organisation; they have targeted union reps in ISS and shopped them to border police in the past.
If the immigration system is overhauled to make visa conditions more restrictive, or to force EU migrants to reapply for leave to remain, it could lead to cleaners having their right to work revoked or, worse, facing deportation.
RMT supports Brexit and a tougher border regime; Tubeworker disagrees. We think closed borders help divide workers on the basis of national origin or immigration status. We believe the right to free movement is a human right.
But notwithstanding this political debate, RMT must defend its migrant worker members and stand up for their right to remain amidst the Brexit chaos.