The judicial system does have judicial review over Presidential executive orders. It's been used on every President, including FDR (which he lost).
It's time for Trump to automatically and unilaterally if necessary, suspend any action ordered by these inferior federal courts until SCOTUS rules on them. Not refuse to hear the, Scotus hear arguments and rule on them.
Fiscal priorities have always been an excuse for poor immigration enforcement. He should divert all funds from The DACA process to the Wall.
The rules for judicial review of Executive policy are explicit, e.g. “abuse of discretion.”
If Trump’s E.O. simply quotes the exact language in INA 1965 and orders the Secretary to enforce the exact language, Administrative law expressly forbids judicial review.
Someone could file a lawsuit claiming that INA 1965 is unconstitutional, but an Executive Order to enforce the exact language in INA 1965 is untouchable.