In 1860, Lincoln ran on a platform that called for open immigration, called for an easy path to citizenship for those who did come, and even offered free land grants to those who had merely applied for citizenship. 
The 1864 GOP platform reaffirmed: "foreign immigration, which in the past has added so much to the wealth, development of resources and increase of power to the nation, the asylum of the oppressed of all nations, should be fostered and encouraged by a liberal and just policy.”
In general, the Republican Party of the 1860s significantly expanded the federal government, created the IRS, fought corporate power, funded a huge system of public colleges, and called for reparations for slavery.
It also, um, impeached an incompetent and corrupt president.
It also, um, impeached an incompetent and corrupt president.
