There's nothing about a subsidy. The word doesn't appear. If the decision doesn't say that it turns on a specific set of facts, it doesn't turn on those facts. I looked at the opinion and I found no language that follows your suggestion. This is what they say about the law: "In July of 1940, pursuant to the Agricultural Adjustment Act of 1938, as then amended, there were established for the appellee's 1941 crop a wheat acreage allotment of 11.1 acres and a normal yield of 20.1 bushels of wheat an acre. He was given notice of such allotment in July of 1940, before the Fall planting of his 1941 crop of wheat, and again in July of 1941, before it was harvested. He sowed, however, 23 acres, and harvested from his 11.9 acres of excess acreage 239 bushels..."
This is what they say about the claim: "It is urged that, under the Commerce Clause of the Constitution, Article I, § 8, clause 3, Congress does not possess the power it has in this instance sought to exercise...Appellee says that this is a regulation of production and consumption of wheat. Such activities are, he urges, beyond the reach of Congressional power under the Commerce Clause, since they are local in character, and their effects upon interstate commerce are, at most, "indirect.""
And then we get the rule: "But even if appellee's activity be local, and though it may not be regarded as commerce, it may still, whatever its nature, be reached by Congress if it exerts a substantial economic effect on interstate commerce..."
Again, see Gonzalez v. Raich for verification. That case has nothing to do with someone submitting to any kind of federal government program and they cite the rule in Wickard in finding that congress could reach the local activity in question.
from the court's decision : in wickard v fillmore ~
http://supreme.justia.com/cases/federal/us/317/111/case.html
"Australia, Canada, and the United States have all undertaken various programs for the relief of growers. Such measures have been designed, in part at least, to protect the domestic price received by producers. Such plans have generally evolved towards control by the central government. [
Footnote 27] In the absence of regulation, the price of wheat in the United States would be much affected by world conditions. During 1941, producers who cooperated with the Agricultural Adjustment program received an average price on the farm of about $1.16 a bushel, as compared with the world market price of 40 cents a bushel.
Differences in farming conditions, however, make these benefits mean different things to different wheat growers. There are several large areas of specialization in wheat, and the concentration on this crop reaches 27 percent of the crop land, and the average harvest runs as high as
Page 317 U. S. 127
155 acres. Except for some use of wheat as stock feed and for seed, the practice is to sell the crop for cash. Wheat from such areas constitutes the bulk of the interstate commerce therein."
"We do not agree. In its effort to control total supply, the Government gave the farmer a choice which was, of course, designed to encourage cooperation and discourage noncooperation. The farmer who planted within his allotment was, in effect, guaranteed a minimum return much above what his wheat would have brought if sold on a world market basis. Exemption from the applicability of quotas was made in favor of small producers. [
Footnote 30] The farmer who produced in excess of his quota might escape penalty by delivering his wheat to the Secretary, or by storing it with the privilege of sale without penalty in a later year to fill out his quota, or irrespective of quotas if they are no longer in effect, and he could obtain a loan of 60 percent of the rate for cooperators, or about 59 cents a bushel, on so much of his wheat as would be subject to penalty if marketed. [
Footnote 31] Finally, he might make other disposition of his wheat, subject to the penalty. It is agreed Page 317 U. S. 131
that, as the result of the wheat programs, he is able to market his wheat at a price "far above any world price based on the natural reaction of supply and demand." We can hardly find a denial of due process in these circumstances, particularly since it is even doubtful that appellee's burdens under the program outweigh his benefits. It is hardly lack of due process for the Government to regulate that which it subsidizes.
The amendment of May 26, 1941, is said to be invalidly retroactive in two respects: first, in that it increased the penalty from 15 cents to 49 cents a bushel; secondly, in that, by the new definition of "farm marketing excess," it subjected to the penalty wheat which had theretofore been subject to no penalty at all,
i.e., wheat not "marketed" as defined in the Act."
" Wheat in excess of this quota, known as the "farm marketing excess" and declared by the amendment to be "regarded as available for marketing," was subjected to a penalty fixed at 50 percent of the basic loan rate for cooperators, [
Footnote 36] or 49 cents, instead of the penalty of 15 cents which obtained at the time of planting. At the same time, there was authorized an increase in the amount of the loan which might be made to noncooperators such as the appellee upon wheat which "would be subject to penalty if marketed" from about 34 cents per bushel to about 59 cents. [
Footnote 37] The entire crop was subjected by the amendment to a lien for the payment of the penalty."
this case was about a penalty for violating a voluntary program of subsidized wheat prices, by the imposition of quotas in exchange for loans and a higher than market price guarantee.
had the appellant not planted an excess acreage, or upon harvest, had not threshed his excess wheat, he would not have incurred the penalty from the subsidy program.
the subsidy program and the penalty for violating the deal are the entirety of the case.