Donald Trump has slammed Joe Biden for rolling back the border policies he introduced during his time in office.
The former president slammed his successor on Wednesday, June 30, for his u-turn on the US border crisis, saying: "I built a wall - Biden built a humanitarian catastrophe."
"Our nation is being destroyed by Biden’s border crisis. The United States must immediately restore the entire set of border security and immigration enforcement measures we put into place - and critically, we must finish the wall," Trump wrote in an op-ed published in the Washington Times.
He said that without borders, there would be no nation in the US and that Biden must finish what he started for the greater good of the American people.

Trump made a point of listing the policies that Biden is reversing before saying that those which are the most damaging pertain to the border.
"Of all the vindictive, shocking, and self-defeating border security actions Joe Biden has taken, none surpasses his decision to stop the final completion of the wall," Trump said.
Pictured below is a prototype for Trump's border wall.

Trump added that by stopping the construction of the wall, he has allowed countless illegal immigrants, as well as drug dealers and human traffickers, access to the US.
The former president's opinion piece was published by the Washington Post on the same day that he visited the US border with Republican lawmakers.
Trump explained that while he made his promise to build a border wall a reality, Biden has so far only painted it.
"Instead, Biden has enacted the most radical open borders agenda imaginable. This is perhaps the first time in world history a nation has purposely and systematically dismantled its own defenses to invite millions of foreign migrants to enter its territory and break its laws," Trump wrote.

"To say that Biden has provoked a national security disaster does not even begin to do justice to the calamity," Trump said.
He went on to claim that as his administration ended catch-and-release and negotiated agreements with Mexico and other countries, Trump said he "achieved an incredible 90% reduction in illegal crossings."