Italian Senators dig in against Renzi's reform plans

ROME (Reuters) - Italian Senators clashed furiously on Tuesday over Prime Minister Matteo Renzi's plan to strip the upper house of most of its powers as part of a wide-ranging package of reforms to Italy's system of government and economy.

The planned reform of the Senate and Title V of the constitution, which governs the relationship between the regions and the national government, has become mired in parliamentary trench warfare, posing a growing threat to Renzi's wider reform agenda.