U.S. President Joe Biden kicked off a multi-city tour of the battleground state of Pennsylvania on Tuesday with a stop in his hometown of Scranton, where he renewed calls to increase taxes on wealthy Americans and large corporations.

Both candidates will focus heavily on Pennsylvania during the election, as Biden’s three-city, three-day tour attests. Trump won the traditionally blue state in 2016 en route to his massive upset victory over Hillary Clinton, and Biden took it back four years later with a win of less than 100,000 votes.

Both presidents touted semiconductor manufacturing as an example of growing the country's manufacturing economy.