Dec. 9 | A half-dozen federal agencies are looking into alleged abuses.
Nov. 19 | Authorities say they have evidence that two firms worked with a large company to "defraud the Government."
Nov. 17 | Sen. Claire McCaskill pushes to close contracting loopholes in ANC program.
Oct. 19 | Prominent federal contractor GTSI Corp. removes CEO, general counsel in deal to end federal work suspension.
Oct. 7 | A proposed Senate bill would end special contracting privileges to Alaska native corporations.
Oct. 1 | The Northern Virginia company allegedly went through other firms to gain access to contracts set aside for small companies.
Search for Alaska native businesses: A searchable, sortable list of companies in SBA programs that are owned by Alaska native corporations.
Many warnings ignored: A timeline of past warnings about abuses by Alaska native corporations.
How the Beltway benefits: One Bethesda contractor made millions working with a native corporation.
Scholarships, community aid: The benefits some Alaska natives have reaped from their corporations' revenue.
Push for reform: A small group of ANC executives have decided that the system must change.
PBS 'Need to Know' investigates: Watch PBS's coverage of this investigation, including developments after the series first broke.
SNC Telecommunications: A nonnative consultant was paid one-third of an Alaska native company's profits.
ANC association defends program: One contractors association says it benefits both taxpayers and Alaska natives.
Request for reform: Three corporations push for reforms to the program giving them access to billions in federal contracts.
Small businesses' advantage: E-mails suggest that GTSI, a defense contractor, used a small business to get access to a contract.