The Trump administration is weighing a new push to build the U-2 spy plane that could be the most expensive of its kind.

The Trump administration announced Thursday it is considering purchasing four planes for the cost of $1.8 billion each for the next two years.

The planes could fly up to 500 miles (819 kilometers) and would be able to spy on the Pacific Ocean.

The new aircraft could help track the movement of the North Korean leader, Kim Jong Un, and other leaders.

It would also help monitor U.N. elections and track drug trafficking.

President Donald Trump said in an interview Thursday that he wants to build his border wall and has a “very good” chance of succeeding.

Trump is the first sitting U.T.O. president to speak out publicly on the project, which the administration says could cost as much as $12 billion.

The planes are a new step in a long line of U-1 spy planes that have cost millions of dollars each.

The United States is using three of the planes, the U2F-1, U2S-2 and U2C-2, in its border surveillance program.

The U.K. is also using one plane.

The United States has spent hundreds of millions of taxpayer dollars on the spy planes.

The first plane was the U3M1, a radar-evading spy plane built by Boeing.

The second plane was U3B5, a surveillance plane that was also built by the U,B-1.

The U.B.1 was sold to the Soviet Union in 1962.