Rev. Jesse Jackson said that his son, Rep. Jesse Jackson Jr. (D-Ill.), is responding to the treatment he is undergoing for depression.

"It's not the kind of health challenge that you can put on a timetable, but he is responding as he seeks to regain his strength," the Rev. Jackson said according to The Chicago Tribune. "He has the best treatment and he is responding."

Rev. Jackson and his wife visited their son at the Mayo Clinic in Rochester, Minn., on Sunday and Monday, where the lawmaker is receiving treatment.

The elder Jackson declined to comment on whether his son would run for reelection this fall.

He did say the lawmaker was cheered by get-well cards from Rep. Dennis Kuchinich (D-Ohio), who gathered at least 200 signatures from staff and members, and others.

Jackson Jr. took a leave of absence from Congress on June 10. Initially, he said he was receiving treatment for exhaustion. He first was receiving treatment in Tucson, Ariz., but then was admitted to the Mayo Clinic on July 25th where officials said he was undergoing evaluation related to treating depression.