President Trump on Friday pushed the Senate to pass a bill spending $5.7 billion on a border wall, and said “nothing else will work” to secure the U.S.-Mexico border.

“The Democrats are trying to belittle the concept of a Wall, calling it old fashioned. The fact is there is nothing else’s that will work, and that has been true for thousands of years,” Trump wrote on Twitter Friday morning. “It’s like the wheel, there is nothing better.”