Few things about this subject
a) Left newspapers like the Indepedent have very selective memory of how to write articles. Yesterday they had an article effectively saying that "Trump is on its own alongside Orban for not signing the treaty".
Yet Italy & Austria are among countries who do not sign it either, while in Belgium there will withdraw it.
b) The treaty is one sided. Is only for migration towards the West. If lets say British immigrants pop at Saudi Arabia, Malaysia, UAE, Israel, Jordan borders, it doesn't apply.
Same applies to South Africa for example, everyone brushes under the carpet the anti-White policies and racism, forcing people to leave the country living for 400 years.
c) Also is against freedom of speech. Now is hate crime if we call someone illegal immigrant, and the taxpayers of the host country, should fork the benefits the treaty expects to all visitors.
I am an immigrant* myself. Never expected anything for free. On the contrary from day one, got a nice paid job due to my professional skills and progressed there in this county due to hard work and skills obtained in the process.
Even for me (an many other non British taxpayers in UK) is obsurd to have people moving to another country expecting from the local taxpayers to cough up support.
*Depends someone's views. Because for many in EU, moving to other country is no different than Americans moving from Texas to New York. They are not called by New Yorkers "Texan immigrants".
Nor the other way around. Yet we have in this country, there is a poisonous rhetoric about "EU immigrants". However everyone brushed under the carpet the British immigrants to EU countries.
You, don't even like not use the phrase "British immigrants" and nobody is using it because it carries some "stigma".