Borski scored a narrow victory of less than 3,000 votes—in the process, ousting the last Republican to represent a significant portion of Philadelphia in the House.

On October 10, 2002, Robert Borski was among the 81 House Democrats who voted in favor of authorizing the invasion of Iraq.

Borski's home was drawn into the Montgomery County-based 13th District of two-term Democrat Joe Hoeffel.

However, Borski decided not to run, instead retiring from Congress and allowing Hoeffel to avoid a costly primary campaign.

Governor Ed Rendell hired Borski in 2003 to help lobby for the state of Pennsylvania in Congress.