S.1757 - Federal Government - A bill to amend title 38, United States Code, to extend or make permanent certain authorities for veterans' benefits, and for other purposes.

Veterans' Authorities Expansion Act of 2007 - Makes permanent the authority of the Department of Veterans Affairs (VA) to: (1) provide hospital care, medical services, and nursing home care to veterans who participated in tests conducted by the Department of Defense Deseret Test Center as part of a program for chemical and biological warfare testing; and (2) provide government markers or memorial headstones for the graves of veterans buried in private cemeteries.

Amends the Veterans Benefits Improvement Act of 2004 to extend through December 30, 2010, the authority for an increase in basic educational assistance under the Montgomery GI Bill for individuals pursuing apprenticeship or on-job training.

Extends through FY2010 the VA's work-study allowance program.