DHS investigates Callahan credentials
Washington Technology online archive
Online coverage: DHS investigates Callahan credentials
July 16: DHS seeking Callahan replacement
July 15: Lawmakers ask GAO to merge diploma mill probes
July 14: Collins queries Labor about Callahan
July 10: OPM calls for more scrutiny of employees' credentials
June 30: Senator wants GAO to examine 'coin-operated college' reimbursements
June 27: Davis: Labor knew about Callahan's degrees
June 25: GAO to investigate fed policies on diploma mills
June 6: Callahan placed on leave by DHS
June 4: Congressional scrutiny of Homeland official steps up
June 3: Senator calls on HSD to investigate official's doctorate
May 30: HSD official obtained Ph.D. from diploma mill
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