A sweeping bipartisan housing affordability bill President Trump has refused — so far — to sign is set to become law on Friday, provided the president doesn’t act. The legislation, called the 21st Century ROAD to Housing Act, aims to improve housing affordability by incentivizing local governments to build more homes by streamlining complex environmental review processes, making it easier for credit unions and banks to issue mortgages, expanding access to modular homes, and restricting large corporate investors from purchasing single-family homes. Following months of negotiations, the bill passed Congress by wide margins in late June. …But even without Trump’s signature, the housing bill is on track to become law on Friday due to a quirk of constitutional law. …Trump could still veto the bill before Friday, although the final version passed Congress so overwhelmingly — 85-5 in the Senate and 358-32 in the House — that the legislative branch could potentially override his veto.