1. Bank records, confirm money transfers. Call Bankers who reported suspicious transfers. FBI to confirm.
2. Call Obama admin witnesses to confirm they approved of Shokin's investigation as seen in various memos.
Obama didn't tell Biden to fire Shokin.
3. Call Hunter, Archer, Bobulinsky, Viktor Shokin, US Ambassador to Ukraine
4. Show video of Joe bragging about firing.
5. Call bankers to confirm existing account balances and transfers from above.
6. If Burisma execs confirm bribe payouts to protect the "going public" of Burisma
7. Email trail especially where Biden used fake names.
There may be more. Its up to Comer and Jordan and McCarthy to use subpoenas.
That's already 1,000,000x more than the dems had on Trump, who was proven justified to ask for an investigation into Burisma's corruption.