Why did Kirkman emphasize the importance of harmony between labor and capital employed by railroads? How did he believe such harmony could be achieved?

the constitution of the united states gave congress the absolute authority over immigration laws

powers  are  denied  to the  national governmentin three distinct ways: some  powers, such as the  power  to levy duties on exports or prohibit the freedom of religion, speech, press, or assembly, are expressly  denied  to the  national government  in the  constitution.