During the Reconstruction era, Julian joined with other Republican Radicals in blocking President Andrew Johnson’s Reconstruction policies. In 1867 he was one of seven representatives selected to prepare articles of impeachment against Johnson.
He got education at public schools.
He studied law.
By the mid-1840s Julian was a Whig member of the Indiana state legislature and a frequent author of antislavery newspaper articles. His abolitionist views prompted him to switch to the Free Soil Party, and in 1848 he won a seat in the U.S. House of Representatives, running on the Free Soil ticket.