DACA was not a law.
It was just another one of Racist Barry the Magnificent’s shady, unconstitutional, illegal policies.
Obama panders to the racist/bigot La Raza, LULAC and Aztlan Nationalist who hate Anglos and who refuse to accept that America is a sovereign country with immigration laws.
That would mean that Trump's Muslim bans were not laws.
Trump was telling the necessary departments how to in force an existing law Immigration and Nationality Act of 1952:
"The determination of the annual quota of any quota area shall be made by the Secretary of State, the Secretary of Commerce, and the Attorney General, jointly. Such officials shall, jointly, report to the President the quota of each quota area, and the President shall proclaim and make known the quotas so reported. Such determination and report shall be made and such proclamation shall be issued as soon as practicable after the date of enactment of this Act. Quotas proclaimed therein shall take effect on the first day of the fiscal year, or the next fiscal half year, next following the expiration of six months after the date of the proclamation, and until such date the existing quotas proclaimed under the Immigration Act of 1924 shall remain in effect."
Congress gave the President the power to make quotas for immigration. The President can make a quota of zero if he wants. He is well within his Constitutional rights to do so.