At present, only 60 miles of wall have been built, almost all through upgrading previously existing fencing, rather than new structures.
The newspaper also cited a conference call last week between officials at the Department of Homeland Security (DHS) and members of the Army Corps of Engineers, in which DHS told the Corps that "hundreds of miles of fencing must be completed before the next presidential election".
"We just heard that he's telling his subordinates to go ahead and break the law in building the wall, and he'll get them a pardon", Painter said.
The Democratic-led House of Representatives-which had been investigating Trump for obstruction of justice-- is to decide whether or not to launch impeachment hearings when it reconvenes from summer recess next month.
One aide said Trump was joking about issuing pardons. The Post's report comes after state officials announced a federal lawsuit challenging a rule that allows indefinite detention of migrant children and their families, marking the 57th legal challenge filed by California against the Trump administration. In what many are arguing is an impeachable offense, President Trump reportedly promised he would pardon those who committed these unlawful acts on his behalf.
US Customs and Border Patrol said it has constructed over 60 miles of "new" border wall system along the Southwest border since 2017 and expects to complete 450 miles by the end of 2020.
"It's astonishing and sad to see Trump's border wall being built through the most spectacular Sonoran desert ecosystem on the planet", Laiken Jordahl, the borderlands campaigner with the Centre for Biological Diversity, told The Associated Press. But then, President Trump tweeted that they are still considering this approach. "It's just going to go on and on if he isn't shut down by the House of Representatives in an impeachment proceeding".
Trump's determination to build the barriers as quickly as possible has not diminished his interest in the aesthetic aspects of the project, particularly the requirement that the looming steel barriers be painted and topped with sharpened tips.
Read the full report at Fox News.
Hundreds of thousands of migrants have come to the USA over the past year, mostly Central American families with children who turn themselves in to agents instead of trying to dodge them.