[6] For nearly a decade, Leising has annually introduced into the state Senate a bill to require elementary schools in Indiana to teach cursive handwriting; the proposals have been unsuccessful.

[9] In 2015, Leising introduced legislation that would prohibit local governments (such as counties, municipalities, and townships) from placing restrictions on building livestock structure, including concentrated animal feeding operations, which in some cases present substantial environmental risks and odors, such as those arising from manure lagoons.

Environmental groups and local government officials opposed the legislation, which they viewed as an attempted power grab by the state's agribusiness lobby.

The Republican lawmakers accused the group of deceptive fundraising practices; the Human Society responded that the letter was an "obvious political attack from politicians who stand in the way of protecting animals from captive hunts, puppy mills, and factory farms.

[14][15] Leising was the Republican candidate challenging Democratic congressman Lee H. Hamilton in the 1994 and 1996 elections for Indiana's 9th congressional district, but was defeated on both occasions.