An incomplete chronological list of Trump's positions on DACA:
1) Supports DACA in spirit, but has concerns that it isn't enshrined in law.
2) Continues DACA.
3) Kills DACA, but gives Congress six months to find a legislative solution.
4) Undermines his own threat by hinting that he'll fix it himself if Congress doesn't.
5) Privately commits to a clean Dream Act.
6) Publicly promises to sign whatever Congress agrees on without making demands of his own.
7) Demands funding for the wall.