From a Washington Post analysis by Glenn Kessler headlined “A guide to why the House is looking into a Biden impeachment”:

“These are allegations of abuse of power, obstruction and corruption and warrant further investigation by the House of Representatives. That’s why today I am directing our House committee to open a formal impeachment inquiry into President Joe Biden. We will go wherever the evidence takes us.” — House Speaker Kevin McCarthy (R-Calif.), directing three House committees to begin an impeachment inquiry into President Biden