Why is the use of machinery of any concern to President Roosevelt?

More Americans could be employed if jobs did not require specialized skills like using heavy machines.

roosovelt was always concerned about how to restore the american nation from the devastating great depression which involved massive loss of jobs for the ordinally american.

The use of machinery is one of the concerns of President Franklin D. Roosevelt because he wanted that most of the American people could be hired and employed if the job itself does not require specialized skills for the employees just like operating and using heavy machines.