Congress supported construction of the transcontinental railroad by

In 1862 Congress passed the Pacific Railroad Acts which designated the 32nd parallel as the initial transcontinental route and gave huge grants of lands for rights-of-way. The legislation authorized two railroad companies, the Union Pacific and the Central Pacific, to construct the lines.  That is really all I know about the Railroads and all that XD

if you are talking about current time the answer is no

if you are talking about when the colonies were developing the answer is yes

the answer is hope this you.