The law compels Hawaii's six pregnancy care centers to post or distribute information referring clients to state-provided prenatal services that would include contraception and abortion.
Oregon's Catholic bishops urged a veto, saying the bill "forces all Oregon taxpayers to help finance an extremist abortion agenda that does not enjoy majority support."
Oregon already has some of the most liberal abortion laws in the U.S., leaving out otherwise common requirements for waiting periods or spending limits on taxpayer funds.
The bishops criticized Prime Minister Justin Trudeau for committing $650 million to support abortion funding overseas when only $119.25 million was pledged to help 20 million who risk starvation in South Sudan, Yemen, eastern Nigeria and Somalia.