An order has been given to stop the Construction crews building the steel wall along the U.S. Mexico border.

The order to halt the Trump administration’s signature infrastructure project was given after President Biden delivered on a campaign promise.

Biden’s presidential proclamation rescinded the national emergency declaration used by President Donald Trump to divert about $10 billion from Defense Department accounts toward the barrier, one of the costliest federal infrastructure projects in U.S. history, The Washington Post reports.

Before this development occurred, the border between Mexico and U.S. has been a crucial topic. Some days before President Biden took over, some migrants who were passing through Mexico to the U.S. were apprehended by security forces.

The  order directs private contractors to stop work “as soon as possible but in no case later than seven days,” while launching a full assessment of the project to determine whether its funding sources are legal and whether they can be allocated elsewhere.

Biden in his proclamation in part read:  “It shall be the policy of my Administration that no more American taxpayer dollars be diverted to construct a border wall,”  “I am also directing a careful review of all resources appropriated or redirected to construct a southern border wall.”

The proclamation also directs federal agencies to formulate a plan within 60 days to redirect border wall funds and “resume, modify, or terminate” segments of the structure that remain under construction.