Yep, he sure did--the Competition in Contracting Act of 1984.
Also, James Wilson once wrote,
...for it is possible that the legislature, when acting in that capacity, may transgress the bounds assigned to it, and an act may pass, in the usual mode, notwithstanding that transgression; but when it comes to be discussed before the judges,--when they consider its principles, and find it to be incompatible with the superior power of the Constitution,--it is their duty to pronounce it void; and judges independent, and not obliged to look to every session for a continuance of their salaries, will behave with intrepidity, and refuse to the act the sanction of judicial authority. In the same manner, the President of the United States could shield himself, and refuse to carry into effect an act that violates the Constitution.
http://press-pubs.uchicago.edu/founders/documents/a3_2_1s11.html">link
And don't look now, but that ratfucker Scalia even wrote that,
Thus, it was not enough simply to repose the power to execute the laws (or to appoint) in the President; it was also necessary to provide him with the means to resist legislative encroachment upon that power. The means selected were various, including a separate political constituency, to which he alone was responsible, and the power to veto encroaching laws, see Art. I, § 7, or even to disregard them when they are unconstitutional.
http://www.law.cornell.edu/supct/html/90-762.ZC.html">link