Eight prototypes of Trump's border wall are being built at an estimated cost of between $2.4 and 4 million. Following is a transcript of the video.

This is what Trump's border wall could look like. Construction has started on eight prototypes for the wall. A mock-up was seen at the border in San Diego and four prototypes will go up near Tijuana, Mexico.

The prototypes will be built with reinforced concrete and stand 18- 30 feet high. The estimated cost for the prototypes is between $2.4 and 4M. The funds are from "reprogrammed money" within US Customs and Border Protection.

Trump has had obstacles getting funding for the wall.

The Senate refused to green light a $1.6B down payment, though a House panel recently approved a bill that would provide up to $10B. The bill will now head to the House floor for debate, but experts say the full cost could come out to about $22B.

California plans to sue Trump to prevent the wall from being built.