DACA的EO到现在也没有被推翻，用EO就要会用，不要有漏洞。

https://www.washingtonpost.com/world/national-security/the-real-reason-president-trump-is-constantly-losing-in-court/2019/03/19/f5ffb056-33a8-11e9-af5b-b51b7ff322e9_story.html

Federal judges have ruled against the Trump administration at least 63 times over the past two years, an extraordinary record of legal defeat that has stymied large parts of the president’s agenda on the environment, immigration and other matters.

...

the rulings so far paint a remarkable portrait of a government rushing to implement far-reaching changes in policy without regard for long-standing rules against arbitrary and capricious behavior.