The provision emerged from President Donald Trump’s campaign pledge to end taxes on Social Security. But experts say many are excluded.

The $3.4 trillion legislation would extend tax cuts from Trump’s first term, implement campaign promises such as eliminating income taxes on tips and flood militarized resources to immigration officials.

The debate within President Donald Trump 's Republican Party over a massive tax-cut and spending bill returns to the House of Representatives on Wednesday. The Senate passed the legislation by the narrowest possible margin on Tuesday. Nonpartisan analysts say it will add $3.3 trillion to the nation's debt over the next decade.