After you retrieve the correct bill tracking report, you can confirm that the bill became a public law by checking the status column. If a bill was enacted into law, the last entry should indicate that action. To locate the final vote, scroll through the legislative chronology. Links to votes appear to the right of the action. Look for the last vote cited. The text next to the link will indicate that the referenced vote refers to passage of the bill.

For detailed instructions on finding bill tracking reports, see this page.