Here comes the flood.

With the Democrats having won control of the House of Representatives, President Donald Trump and his crew in the White House and assorted federal agencies can expect to be hit by a wave of investigations and subpoena requests from Capitol Hill. There are dozens of House committees and subcommittees, and each no doubt has its own to-do list.

The House Intelligence Committee, under the chairmanship of Rep. Adam Schiff (D-Calif.), will certainly revive aspects of the Trump-Russia probe that House Republicans smothered. The House Foreign Affairs Committee surely will consider examining the Trump-Saudi relationship in light of the grisly murder of Jamal Khashoggi. You can bet the Homeland Security Committee will investigate the Trump administration's family-separation policy, and the Armed Services Committee will examine whether there was any reason for Trump to send 15,000 troops to the border to deal with a migrant caravan.