Why the company’s are not appealing in court against the presidential memo of 31mar17 for short notice?

Why the company’s are not appealing in court against the presidential memo for speciality occupation on 31st Mar 2017. That the memo was out in short periods of time, and the company’s couldn’t get appropriate LCA on short notice before filing Forms I-129.?

You are right. The memo is very easy to appeal against but most US companies including Facebook and Google will not do so - their immigration legal team is not strong enough to argue the point logically and nobody wants conflict with the Federal government.