The only reason Obama is considering consulting Congress about this is; if it goes South, he can blame them.
I keep hearing "no US boots on the ground", and I support that100%.!
However, if Obama had not refused to send armaments to Ukraine, Syria and Iran when all this first started; giving these countries the fire power they asked for to defend themselves without involving US troops on the ground, it's possible we would not have a world-wide crisis on our hands.
Obama is sending armaments to Ukraine, Syria. There are also US mercenaries fighting in Ukraine.
That's why we have a world-wide crisis on our hands!