Tax avoidance is not illegal. But guess who writes the laws with loopholes only the rich can find and use?

But it is very, very unseemly in a candidate running in "the party of the people," or in a candidate running a populist insurgency against elites and the establishment.

Trump and Clinton share Delaware tax 'loophole' address with 285,000 firms

This squat, yellow brick office building just north of Wilmington’s rundown downtown is the registered address of more than 285,000 companies. 

That’s more than any other known address in the world, and 15 times more than the 18,000 registered in Ugland House, a five-storey building in the Cayman Islands that Barack Obama called “either the biggest building in the world, or the biggest tax scam on record”.

Officially, 1209 North Orange is home to Apple, American Airlines, Coca-Cola, Walmart and dozens of other companies in the Fortune 500 list of America’s biggest companies.

. . . .

But it’s not just big corporations that have chosen to make 1209 North Orange their official home.

Both the leading candidates for president – Hillary Clinton and Donald Trump – have companies registered at 1209 North Orange, and have refused to explain why.

Clinton, who has repeatedly promised that as president she will crack down on “outrageous tax havens and loopholes that super-rich people across the world are exploiting in Panama and elsewhere”, collected more than $16m in public speaking fees and book royalties in 2014 through the doors of 1209, according to the Clintons’ tax return.

Just eight days after stepping down as secretary of state in February 2013, Clinton registered ZFS Holdings LLC at CTC’s offices. 

Bill Clinton set up WJC LLC, a vehicle to collect his consultation fees, at the same address in 2008.

A spokesman for Clinton said: “ZFS was set up when Secretary Clinton left the State Department as an entity to manage her book and speaking income. No federal, state, or local taxes were saved by the Clintons as a result of this structure.”

The Clintons’ companies share the office with several of Trump’s companies. 

They include Trump International Management Corp and several companies that form part of Hudson Waterfront Associates, a Trump partnership to develop more than $1bn worth of luxury condos on the west side of Manhattan.

Of the 515 companies on Trump’s official Federal Election Commission (FEC) filing, 378 are registered in Delaware, he revealed, after being questioned by the Guardian about why so many of his New York-based companies are incorporated in Delaware.

He said he asked his staff to find out how many entities he has in Delaware. “I figured they’d maybe say two or three, right?” Trump said at a rally in Harrington, Delaware, on Friday. “We have 378 entities registered in the state of Delaware, meaning I pay you a lot of money, folks. I don’t feel at all guilty, OK?”

Among them are 40 Wall Street Corporation, Trump’s 72-storey downtown tower that was the tallest building in the world for two months in 1930, and the Trump Carousel in Central Park.

. . . .

The Guardian Media Group, owner of theguardian.com, is registered in Dover, Delaware. 

“Guardian Media Group has business operations in the UK, US and Australia,” a Guardian spokesperson said. 

“The group’s assets are held entirely by companies in these countries and are fully subject to prevailing tax laws and regulations. The group also has a UK endowment fund which holds a mixture of UK and non-UK assets and is fully subject to UK tax laws and regulations.”