While there are a few concerns that have investors' attention at the moment, including a forecasted contraction in first-quarter gross domestic product, along with the historic priciness of stocks, perhaps the prevailing issue for the stock market is President Donald Trump's tariff policy.

Tariff news has led to a volatile stock market over the past few months, but retail investors have been happy to use that as an excuse to buy the dip.

Trump said he would impose new trade plans on "Liberation Day" on April 2. Here's everything we know, including a possible raft of reciprocal tariffs.