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AP Carolyn Kaster

The White House budget released on Tuesday appears to have double-counted more than $2 trillion in estimated tax revenue. As such, the budget would not balance over 10 years (as promised), even if the U.S. economy were to hit sustained 3% growth (as projected by the White House, but by very few others).

Bottom line: Budget projections are a specious business by their nature, as no one can accurately predict the nation's next decade of economic fortunes. Let alone all of the legislative assumptions required, such as the future of healthcare, the specifics of tax reform, etc. Moreover, White House budget requests have a habit of being ignored by Congress (see: last month). But this double-count is a big unforced error.

The problem: Trump's budget anticipates around $2.06 trillion in extra federal revenue over the next decade, based on the aforementioned increase in economic growth. That new money then would be used to offset Trump's proposed tax cuts, as the Administration previously said that the tax cuts would be revenue-neutral. Unfortunately, that same $2 trillion also is earmarked for closing budget gap. I tried to come up with a household analogy here, but they were all just too ridiculous. Only in D.C. can someone present this sort of math with a straight face.

Straight face: Trump budget director Mick Mulvaney was asked about the double-count today during a press briefing, and didn't directly address the issue. First he blamed the Obama Administration for its own faulty economic projections ― namely because former Obama economic advisor Larry Summers raised the double-count in the Washington Post ― and then said that the budget numbers also did not assume any shrinkage the so-called "tax gap," or the number of people who should pay taxes but don't (something he expects personal tax simplification to help achieve).

More Mulvaney:

"We did [the double count] on purpose... I'm aware of the criticisms and would simply come back and say there's other places where we were probably overly conservative in our accounting. We stand by the numbers."

Go deeper

Ben Geman, author of Generate
19 mins ago - Economy & Business

GM's shrinking deal with Nikola

Illustration: Rebecca Zisser/Axios

General Motors will no longer take an equity stake in Nikola Corp. or build its pickup truck, under a revised deal that still envisions GM as a key tech supplier for Nikola's planned line of electric and fuel cell heavy trucks.

Driving the news: The revised agreement Monday is smaller in scope than a draft partnership rolled out in September that had included a $2 billion stake in the startup and an agreement to build its Badger pickup.

1 hour ago - Technology

Exclusive: Facebook's blackout didn't dent political ad reach

Photo: Valera Golovniov/SOPA Images/LightRocket via Getty Images

Americans saw more political ads on Facebook in the week before the 2020 election than they did the prior week despite the company's blackout on new political ads during that period, according to Global Witness, a human rights group that espouses tech regulation.

Why it matters: The presidential election was a key stress test for Facebook and other leading online platforms looking to prove that they can curb misinformation. Critics contend measures like the ad blackout barely made a dent.

Wall Street wonders how bad it has to get

Illustration: Aïda Amer/Axios

Wall Street is working out how bad the economy will have to get for Congress to feel motivated to move on economic support.

Why it matters: A pre-Thanksgiving data dump showed more evidence of a floundering economic recovery. But the slow drip of crumbling economic data may not be enough to push Washington past a gridlock to halt the economic backslide.