1) conspiring with an unfriendly nation to get dirt on political opponents
2) refusing to concede an election in which he lost and creating an uprising at the capital seeking to overturn said election.
These are the two most glaring. And yes, these are treasonous. His many, many toxic policies and missteps while in office are too numerous to list here, and while none of these may be "impeachable" they are, nonetheless, far more serious than simply refusing to send troops to the southern border to stop unarmed civilians from crossing it.
2) refusing to concede an election in which he lost and creating an uprising at the capital seeking to overturn said election.
These are the two most glaring. And yes, these are treasonous. His many, many toxic policies and missteps while in office are too numerous to list here, and while none of these may be "impeachable" they are, nonetheless, far more serious than simply refusing to send troops to the southern border to stop unarmed civilians from crossing it.