I just found the following from his website: As a member of the Senate Veterans Affairs committee, as early as February 2005, Senator Obama warned of a shortfall in the VA budget. Four months later, the VA reported that in fact it had more than a $1 billion shortfall. Senator Obama cosponsored a bill that led to a $1.5 billion increase in veterans' medical care. During the debate on the Fiscal Year 2007 budget, Senator Obama cosponsored measures that would have provided additional funding increases for veterans.
In January 2007, Senator Obama reintroduced the Lane Evans Veterans Health and Benefits Improvement Act to improve the VA’s planning process to avoid budget shortfalls in the future. The bill requires the VA and the Department of Defense to work together and share data so that we know precisely how many troops will be returning home and entering the VA system.
He authored the Sheltering All Veterans Everywhere Act (SAVE Act) to strengthen and expand federal homeless veteran programs that serve over 100,000 homeless veterans annually. During the debate on the Fiscal Year 2007 budget, Senator Obama passed an amendment to increase funding for homeless veterans programs by $40 million. These funds would benefit programs that provide food, clothing, mental health and substance abuse counseling, and employment and housing assistance to homeless veterans.
Working with Senators Akaka and Craig, Senator Obama passed legislation in December 2006 to provide comprehensive services and affordable housing options to veterans through the Department of Veterans Affairs, Department of Housing and Urban Development and nonprofit organizations. This legislation was signed into law and is modeled on parts of the SAVE Act and the Homes for Heroes Act, a measure that Senator Obama had previously authored.
There's more if anyone would care to read it:
http://obama.senate.gov/issues/veterans/index.html
He's also on an education committee, and his contributions and proposals are found here:
http://obama.senate.gov/issues/education/