; (II) immediately revoke all issued H–1B visas currently being used by the petitioner employer; (III) permanently bar the petitioner employer from applying for additional H–1B visas; and (IV) require the petitioner employer to provide retroactive compensation for any displaced United States citizen or lawful permanent resident employee. (E) Scope of investigative authority (i) In general The Secretary of Labor may initiate an investigation of any petitioner employer that employs nonimmigrants described in section 101(a)(15)(H)(i)(b) if the Secretary of Labor has reasonable cause to believe that the petitioner employer is not in compliance with this subsection. (ii) Certification The Secretary of Labor (or the acting Secretary in case of the absence or disability) shall personally certify that reasonable cause exists to initiate an investigation under this subparagraph. The investigation may be initiated for reasons other than completeness and obvious inaccuracies by the petitioner employer in complying with this subsection. (iii) Use of information If the Secretary of Labor receives specific credible information from a source who is likely to have knowledge of a petitioner employer’s practices or employment conditions, or a petitioner employer’s compliance with the petitioner employer’s labor condition application under paragraph (1), and whose identity is known to the Secretary of Labor, and such information provides reasonable cause to believe that the petitioner employer has committed a willful failure to meet a condition under subparagraph (A), (B), (C), (E), (F), or (G)(i), has engaged in a pattern or practice of failures to meet such a condition, or has committed a substantial failure to meet such a condition that affects multiple employees, the Secretary of Labor may— (I) conduct an investigation into the alleged failure or failures