28 CFR §5.307

For the purpose of section 3(h) of the Act, the burden of establishing that registration under the Lobbying Disclosure Act of 1995, 2 U.S.C. 1601 et seq. (LDA), has been made shall fall upon the person claiming the exemption. The Department of Justice will accept as prima facie evidence of registration a duly executed registration statement filed pursuant to the LDA. In no case where a foreign government or foreign political party is the principal beneficiary will the exemption under 3(h) be recognized.