I believe it has been stated times before on this site that Dina DeMalchusa Dina does apply to paying taxes.
However, I noticed in this answer that it must be enforced in practice to apply. With that in mind, does receiving small payments require reporting halachically to the IRS, with the understanding that they very rarely if ever actually enforce these reportings?
This answer claims that taxes in general are enforced, but is this subset of tax-law, reporting of multiple small incomes (less than $600 each) considered enforced as well?