would readily incriminate him, and which he may reasonably expect would be provided to prosecuting authorities. These hazards of incrimination can only be characterized as “real and appreciable.” Reg. v. Boyes, supra, at 330; Brown v. Walker, supra, at 699-600. Moreover, unlike the income tax return at issue in United States v. Sullivan, 274 U. S. 269, petitioner’s submission of an excise tax payment, and his replies to the questions on the attendant return, would directly and unavoidably have served to incriminate him; his claim of privilege as to the entire tax payment procedure was therefore neither “extreme” nor “extravagant.” Compare, id., at 263.
We are thus obliged to inquire whether petitioner is otherwise foreclosed from asserting the constitutional privilege. For reasons indicated in Marchetti, supra, we have found nothing in United States v. Kahriger, 345 U. S. 22, or Lewis v. United States, 348 U. S. 419, which now warrants the exclusion of this situation from the privilege’s protection.5 It need only be added that the requirements associated with the excise tax are directed wholly to past and present wagering activities; they lack even the illusory prospectivity which characterizes the special occupational tax and registration requirements.
Similarly, we have concluded that the “required records” doctrine, Shapiro v. United States, 335 U. S. 1, cannot be appropriately applied to these circumstances. See generally Marchetti v. United States, supra. The premises of the doctrine, as it is described in Shapiro, are evidently three: first, the purposes of the United
5
I recognize that Albertson was decided on Fifth Amendment grounds without reaching the petitioners’ First Amendment claims. 382 U. S., at 73-74 and n. 6. However, in applying the Albertson holding to the facts of these cases, it cannot be overlooked that the registration requirement in Albertson was directed at the petitioners’ organizational affiliations' which were arguably protected by the First Amendment. See United States v. Robel, 389 U. S. 258 (1967). There is no such First Amendment issue lurking in the cases decided today. The operative fact upon which the registration requirement of § 4412 depends is an individual’s status as a gambler.