Four years after Gov. Greg Abbott announced Texas would be the first state to build its own border wall, lawmakers have quietly stopped funding the project, leaving only scattered segments covering a small fraction of the border.

That decision, made in the waning hours of this year’s legislative session, leaves the future of the state wall unclear. Just 8% of the 805 miles the state identified for construction is complete, which has cost taxpayers more than $3 billion to date. The Texas Tribune reported last year that the wall is full of gaps that migrants and smugglers can easily walk around and mostly concentrated on sprawling ranches in rural areas, where illegal border crossings are less likely to occur.

State leaders suggested the federal government could pick up the effort. However, during President Donald Trump’s first term, when wall building was his top priority, his administration completed just 21 miles in Texas — about a third of what the state was able to build over the past four years.

The Tribune reported last year that the state’s wall program would take around 30 years and more than $20 billion to complete.