https://www.reuters.com/article/us-mexico-uber/mexico-tax-plan-for-riding-hailing-firms-may-soon-be-mandatory-cabify-idUSKCN1SV012 >A tax withholding plan in Mexico for drivers at ride-hailing firms envisaged as voluntary when it was unveiled earlier this week could become obligatory in 2020, Spanish company Cabify said on Friday.