House Ways and Means Chairman Kevin Brady. Photo: Alex Brandon / AP

Republican House members tell me that the most politically explosive issue, by far, in the tax plan to be released tomorrow is the over-complicated treatment of "pass-through entities" (often small businesses that report business income on personal returns). Some influential Republican House members are saying final language on the tax bill's treatment of those situations will disadvantage some small firms and could imperil GOP support for the plan.

"This is supposed to be a simplification. It's not," a House GOP member told me. "It's going to be the most explosive thing once members hear about it."Why this matters: Pass-through entities — many of which are small businesses — are a big faction of Republican supporters. The White House and House leadership knows this provision will be problematic with some members.Other things I can confirm:The House tax bill will not repeal the individual Obamacare mandate, even though it would bank them a good chunk of change and even though President Trump called for it today.Corporate rate cut to 20 percent will be permanent, even though the Ways and Means Committee flirted with making the corporate cuts temporary. (That would've been a big political problem.)The expansion of the child tax credit — an Ivanka Trump priority — made it into the bill.The bill repeals the estate tax — though it's phased in.And after much angst, Republican tax-writers have decided there's too much political pain in meddling with 401k retirement benefits.

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Coronavirus dashboard

Illustration: Aïda Amer/Axios

  1. Global: Total confirmed cases as of 9 p.m. ET: 20,755,406 — Total deaths: 752,225— Total recoveries: 12,917,934Map.
  2. U.S.: Total confirmed cases as of 9 p.m. ET: 5,246,760 — Total deaths: 167,052 — Total recoveries: 1,774,648 — Total tests: 64,831,306Map.
  3. Politics: House Democrats to investigate scientist leading "Operation Warp Speed" vaccine projectMcConnell announces Senate will not hold votes until Sept. 8 unless stimulus deal is reached.
  4. 2020: Biden calls for 3-month national mask mandateBiden and Harris to receive coronavirus briefings 4 times a week.
  5. States: Georgia Gov. Brian Kemp to drop lawsuit over Atlanta's mask mandate.
  6. Business: Why the CARES Act makes 2020 the best year for companies to lose money.
  7. Public health: Fauci's guidance on pre-vaccine coronavirus treatments Cases are falling, but don't get too comfortable.

Trump says he intends to give RNC speech on White House lawn

President Trump speaking to reporters on South Lawn in July. Photo: Jabin Botsford/The Washington Post via Getty Images

President Trump told the New York Post on Thursday that he plans to deliver his Republican National Convention speech from the White House lawn, despite bipartisan criticism of the optics and legality of the location.

Why it matters: Previous presidents avoided blurring staged campaign-style events — like party conventions — with official business of governing on the White House premises, per Politico.

Fauci's guidance on pre-vaccine coronavirus treatments

Illustration: Aïda Amer/Axios

Antibody drugs and various medicine cocktails against the coronavirus are progressing and may provide some relief before vaccines.

The big picture: Everyone wants to know how and when they can return to "normal" life, as vaccines are not expected to be ready for most Americans for at least a year. Two therapies are known to be helpful, and more could be announced by late September, NIAID Director Anthony Fauci tells Axios.