From Knights of Columbus Supreme Council:

As America prepares to welcome a new president, the Knights of Columbus is urging its members and other Catholics to pray the Novena for National Unity fromThursday, Jan. 12, through Inauguration Day, Friday, Jan. 20. The prayer invokes the maternal intercession of Mary, the Immaculate Conception, patroness of the United States.

In announcing the days of prayer, Supreme Knight Carl Anderson noted:

From its earliest days, the Knights of Columbus has been an organization that is dedicated to both faith and patriotism. This novena provides Knights, and all Catholics, the opportunity to serve their country in a faithful way by bringing unity in values and faith in a way that overcomes any political divisions. Our country is strongest when it is unified, and that unity is strongest when it is shaped by the timeless values of our faith.
We ask all Catholics to pray this Novena for National Unity, beginning on Thursday, Jan. 12, and concluding on Friday, Jan. 20.

The prayer can be found here.