Just as President Donald Trump’s sweeping tax bill passed the House with razor-thin margins, the Senate has begun to tinker with the legislation’s architecture. Some are now warning that their changes could cause the edifice to collapse.

Spearheaded by President Trump, this bill promises to bring about substantial tax reforms aimed at benefiting a broad spectrum of Americans. Among its key features are significant adjustments to the state and local tax (SALT) deductions and enhanced tax exemptions for pass-through businesses.