The Trump administration is now arguing that the federal government doesn't have to abide by Washington, DC's Height of Buildings Act, which has kept most buildings in the US capital under 130 feet. 

The Washington Post reported Friday that a memo put out by the Interior Department argues that the 1910 Height Act should be considered a local zoning law, with exemptions for federal construction. 

That fresh interpretation of the law comes as President Donald Trump is trying to get his triumphal arch project off the ground - to 250-feet in height. 

The National Capital Planning Commission, which is now stuffed with Trump allies, is expected to vote on the 'Arc de Trump' at the group's July meeting. 

NCPC Chairman Will Scharf, whose day job is White House Staff Secretary, had requested the Interior Department's memo as part of the commission's review process, the Post reported. 

Career staff had previously said that the NCPC had always applied the Height Act to federal projects. 

But Scharf had argued that the Height Act should not apply to Trump's arch. 

Now the government agrees with him. 

Scharf, a Harvard-educated lawyer by trade, had previously said that the NCPC had no oversight power over demolitions, allowing the October destruction of the White House's East Wing to go forward. 

The Interior Department did not tell the Post who authored the memo or whether Trump is planning additional projects in Washington where the height limit might be an issue. 

'Great nations build beautiful structures and works of art that cultivate national pride and love of country. In this tradition, Secretary [Doug] Burgum is thrilled to champion the United States triumphal arch which will be a project that all Americans can be proud of,' a spokesperson for the Interior Department told the newspaper. 

The Interior Department did not immediately respond to the Daily Mail's request for comment.   

The new interpretation of the law also bypasses Congress, something that incensed Democrats. 

'Congress, not the Executive, decided in 1910 that Washington would remain a horizontal city, and Congress has preserved that judgment ever since,' Democrats told Burgum in a letter on Tuesday, according to the Post. 

They pushed Burgum not to build Trump's arch. 

The Height Act has been taken so seriously that it's included as part of the DC Home Rule Act of 1973. 

That act gave District residents, who are otherwise disenfranchised, the ability to elect a mayor and 13-member city council. 

It specifically barred DC Council from passing any laws that would overrule the Height of Buildings Act. 

But Trump has floated that he'd like to do away with DC Home Rule too - as democratic socialist Janeese Lewis George looked poised to become Washington's next mayor. 

The race was called for Lewis George on Thursday.