The need to fund the government past September might force Congress to agree on emergency Zika funding, weeks after the virus started spreading by mosquitoes in the U.S.

House Republicans are considering attaching a bill funding Zika efforts to a continuing resolution funding the government, among other potential venues. But whatever approach they choose, it’s not clear how they and Democrats might bridge a deep divide over whether to give eight Planned Parenthood clinics in Puerto Rico additional money and how to offset the measure.