我们组的头儿帮我跟HR说能不能把这30个月从交PERM申请那天算起。HR说(也不知他从哪儿听来的)："there has been a change in immigration law so that now all Green Card recipients within a company must (a) be treated the same, and (b) be treated in one of 2 particular ways. The 2 particular ways are:either the company pays the GC costs and gets a 30 month retention clause or the employee pays the GC costs and there is no retention."

　　请问真有这个说法吗？有没有移民局的官方说法啊？组头说管我们部门的VP其实挺好说话的，就是得找出出处证明HR的人是错的。