Congress continues to try to figure out the cause of and solution to the Deepwater Horizon oil spill in the Gulf of Mexico. The Florida delegation, whose state has started to see tar balls wash up on its shores, holds a briefing on the state of affairs in their state at 8:30 a.m. ET. Representatives from the Environmental Protection Agency, the U.S. Coast Guard, BP America, and Transocean testify before the House Transportation and Infrastructure Subcommittee on Coast Guard and Maritime Transportation at 10:00 a.m. ET.

Famous faces find their way to the Hill to talk to lawmakers on Wednesday. Academy Award winning actor Sean Penn testifies before the Senate Foreign Relations Committee on the rebuilding efforts in Haiti after January’s devastating earthquake. Best-selling author of “The Big Short” Michael Lewis speaks to a closed session of the House Democratic caucus at 1:30 p.m. ET. We will be staking out members to find out what they learned.

Thomas Kean and Lee Hamilton, the former chairman and vice chairman of the 9/11 Commission discuss homeland security matters with the House committee of the same name at 10:00 a.m. ET.

Financial institutions aren’t the only ones with a stake in the financial regulatory reform bill making its way through the Senate. Auto dealerships are concerned that their car financing operations will fall under the new regulations for the financial services industry. Sen. Sam Brownback, R-Kan., has introduced an amendment to the bill to exempt dealers from the regulations, and will discuss it with the press at 2:30 p.m. ET.

Solicitor General Elena Kagan continues her rounds on Capitol Hill starting at 9:20 a.m. ET and continuing through the afternoon.

Though we don’t have an exact time yet, there will be plenty of reaction (i.e. spin) to last night’s primaries and the special election in Pennsylvania’s 12th district, so stay with Fox News for all the latest.