Complex sentence: Taft favored the House bill due to the more substantial rate reductions it contained, would have preferred more substantial reductions than those provided by the tariff rates; however, feared potentially dividing his party by wielding his veto power.
Split into simpler sentences: Taft favored the House bill due to the more substantial rate reductions it contained and would have preferred more substantial reductions than those provided by the tariff rates. However, he feared potentially dividing his party by wielding his veto power.