Steny Hoyer admitted to hospital, diagnosed with pneumonia

The 79-year-old Maryland Democrat is being treated with antibiotics and is currently resting, said spokeswoman Katie Grant, who added that the congressman is expected to make a full recovery quickly.

"He looks forward to being back at work very soon," Grant said in a statement.

Hoyer was checked in to the hospital after a long week of campaigning in both Wisconsin and Illinois. His visit in Milwaukee was part of his "Pathways Out of Poverty" listening tour, in which he travels to communities to hear from Americans living in poverty. His visits included a stop at a community health center and a roundtable discussion on last week's Supreme Court decision on unions.