; 129 Stat. 1312), the Secretary of Health and Human Services shall submit to the Committee on Commerce, Science, and Transportation of the Senate and the Committee on Transportation and Infrastructure of the House of Representatives a report on— (1) the status of the hair testing guidelines; (2) an explanation for why the hair testing guidelines have not been issued; (3) a schedule, including benchmarks, for the completion of the hair testing guidelines; and (4) an estimated date of completion of the hair testing guidelines. 7. Mandatory Guidelines for Federal Workplace Drug Testing Programs using Oral Fluid (a) Deadline Not later than December 31, 2018, the Secretary of Health and Human Services shall publish in the Federal Register a final notice of the Mandatory Guidelines for Federal Workplace Drug Testing Programs using Oral Fluid, based on the notice of proposed mandatory guidelines published in the Federal Register on May 15, 2015 (94 FR 28054). (b) Rule of construction Nothing in this section may be construed as— (1) limiting or otherwise affecting the discretion of the Secretary of Health and Human Services to revise the proposed mandatory guidelines described in subsection (a) to address issues raised during rulemaking, including issues involving passive exposure to marijuana use, prior to publishing the final notice; or (2) requiring the Secretary of Health and Human Services to reissue a notice of proposed mandatory guidelines to carry out subsection (a). 8. Electronic recordkeeping Not later than December 31, 2019, the Secretary of Transportation shall issue a final rule revising part 40 of title 49, Code of Federal Regulations, to authorize, to the extent practicable, the use of electronic signatures or digital signatures executed to electronic forms instead of traditional handwritten signatures executed on paper forms.