In India, one of the common threads that run through many of the corruption scandals is the issue of conflict of interest i.e. public officials taking policy decisions based on their personal interest. For example, Shashi Tharoor in the IPL controversy or Ashok Chavan in the Adarsh Housing Society scam. Many countries take measures to minimize conflict of interest of its MPs by regulating membership of parliamentarians in Committees, making it mandatory for them to declare pecuniary interest, and restricting employment both during and after completion of tenure. For example, the US Senate has a detailed Code of Official Conduct that provides guidelines on conflict of interest. India also has some measures in place to minimize conflict of interest. These are codified in the Code of Conduct for Ministers, Code of Conduct for Members of the Rajya Sabha, Rules of Procedure and Conduct of Business in the Lok Sabha and Rajya Sabha and Handbook for Members of Lok Sabha and Rajya Sabha. Every Rajya Sabha MP has to declare his or her interest (along with assets and liabilities). He has to declare five pecuniary interests: remunerative directorship, remunerated activity, majority shareholding, paid consultancy and professional engagement. Lok Sabha MPs can object to another MP joining a parliamentary committee on grounds that he has personal, pecuniary or direct interest. (For more details, see PRS note on Conflict of Interest Issues in Parliament). On December 1, 2010, PRS held its annual Conference on Effective Legislatures. One of the topics discussed was MPs and Conflict of Interest: Issues and Resolution. Panelists included D Raja, Prakash Javdekar and Supriya Sule. Issues such as requirement for transparency, expertise of legislators, election of honest legislators, and ethical media were discussed. The issues that were raised during the discussion are summarised in the PRS Summary of Proceedings from the Conference.
Unlike the Parliamentary system, the concept of 'question hour' or 'question time' doesn't really exist in the American legislature. Here's an interesting report done by the Congressional Research Service on the possibility of a question time in the US. From our point of view, the report is interesting because it reviews the existing provisions for a Parliamentary Question Time in different countries (India isn't mentioned), and considers the pros and cons of such a system. The report concludes: "Whether the question period would be successful in a system of separated powers depends in large part on the attitude of its participants and on the format the question period ultimately assumes. The question period has the potential of involving more rank-and-file Members in the policy-making process, and improving the means of communication between executive departments and the Congress. It also could harden relations between the Congress and the Executive, and might increase the level of partisan controversy in Congress." There's even an online petition among a few american bloggers to push for a question time in the US. Read about it here. In this country of course, parliamentary questions are an established feature of the work of Parliament. Parliamentary questions cover a huge range of topics and can be an mine of information and data about government policy. The Lok Sabha and Rajya Sabha sites put the complete text of all parliamentary questions (and the responses to them) online.
