This unsuccessful legislative campaign in the Missouri state legislature failed to pass sales and use tax legislation to fund transportation.  This constitutional amendment proposed a temporary one percent increase in the state sales and use tax over a ten-year period, and it was estimated to raise approximately $8 billion over a ten-year period.  Although this bill initially passed in both the Missouri House and the Missouri Senate, the measure was filibustered by a group of Senators on the last day of the legislative session.  If the constitutional amendment would have passed, then it would have been placed on the November ballot for voters to ratify.