Who is the presiding officer of the senate whenever the vice president is not present?

After world war 1 immigration was based on

Will give 20 pointsthe problems experienced by the british colonists were best expressed in which document? a) the preamble b) the federalist papers c) the declaration of independence d) the constitution of the united states of america

What is the supreme law of the land? the declaration of independence the federalist papers the articles of confederation the constitution