Section 32A. No special commission, no special or standing committee of the general court or of either branch of the general court and no sub-committee of any such commission or committee shall travel either within or without the commonwealth except by a vote of a majority of the total membership of such commission or committee, nor until the written approval of the presiding officers of both branches of the general court or of the presiding officer of the appropriate branch has been received. Such written approval shall specify the purpose of the trip, the places to be visited, the time within which such travel is to be completed and the names of all members or other persons authorized to travel.