In a limited company, the liability of members or subscribers of the company is limited to what they have invested or guaranteed to the company.
The current President pro tempore of the Senate is Utah Republican Orrin Hatch. Elected on January 6, 2015, he is the 90th person to serve in this office.
Vice President Joe Biden is technically the head of the senate; Senator Robert Byrd (D-WV) is President pro tempore. The President pro tempore is third in the line of succession to the Presidency, after the Vice President of the United States and the Speaker of the House of Representatives. Source(s):