By Sarah N. Lynch WASHINGTON (Reuters) – The U.S. House panel investigating the January 2021 attack on the U.S. Capitol will present evidence this week that former President Donald Trump was involved in a failed bit to submit slates of fake electors to overturn the 2020 election, a key lawmaker said on Sunday. “We will show evidence of the president’s involvement in this scheme,” Democratic Congressman Adam Schiff, a member of the House of Representatives Select Committee, said on CNN’s “State of the Union.” “We will also again show evidence about what his own lawyers came to think about this …