United States (Federal / National)
The Uniform Electronic Transactions Act. http://euro.ecom.cmu.edu/program/law/08-732/Transactions/ueta.pdf 1999. Adopted in 49 states in the United States. See also: https://en.wikipedia.org/wiki/Uniform_Electronic_Transactions_Act
The Electronic Signatures in Global and National Commerce Act. ("ESIGN"). 15 U.S.C. § 96. https://www.law.cornell.edu/uscode/text/15/chapter-96 See also: https://en.wikipedia.org/wiki/Electronic_Signatures_in_Global_and_National_Commerce_ActTBD