if the proposed rule takes effect after 2 months then he may not get a green card. benefits used before the rule gets effect will not count. so wait until it formally takes effect. also there is 99.99% chance that this will go into court and the court will issue stay order and they'll have to revise the rule. so no need to panic yet. worst case scenario- if its certain to take effect and if this rule goes thru courts and all i guess it will be best to terminate the benefit before the law goes into effect.