President Donald Trump is expected to impose sweeping reciprocal tariffs on global trading partners on Wednesday. Styled by Trump as America’s “Liberation Day,” details of the tariff plans were still being formulated ahead of a White House Rose Garden announcement ceremony scheduled for 4 p.m. ET. The new duties will take effect immediately after Trump announces them, while a separate 25 percent global tariff on auto imports will take effect on April 3.

The Senate Commerce Committee is holding a hearing on Wednesday to question Boeing CEO Kelly Ortberg on the planemaker’s recent safety issues and other hot-button topics. The hearing will examine the steps Boeing has taken to address production deficiencies and safety issues identified after Alaska Airlines Flight 1282 lost a door plug mid-flight last year.