Different branches have different rules. In terms of writing legislation, the president’s rule is quite clearly laid out as he sort of indicates but then ignores with his pen, with his veto pen. That is his role. Then he has a phone. He can call Congressmen, he can call Senators and say, this is what I’d like in the law. But other than that, he has no role in writing legislation.
He is vetoing legislation by refusing to enforce it. The constitution demands that the president of the United States take care that the laws be faithfully executed. He has simply taken it upon himself to rewrite Obamacare, to rewrite immigration laws, — you indicated with the DREAMers thing — to rewrite drug laws.
Now we’re not — Colorado and Washington, sure, just legalize drugs that the federal government, that the Congress has written and made illegal. This is the bottom of the slippery slope, and I think he would be impeached if he weren’t America’s first black president.