Seriously, what is the big difference between the two?

The Senate is a representation of various streams. Getting their appointments from stream owners and mods as opposed to elected officials.
This makes sure the president's steam has a diversity of voices rather than only just voices from the ruling party.

Senate votes on foreign affairs, like alliances etc

Congress did that in the past

Not anymore they ain’t

Point is that they did that before Senate, so your just taking a part of Congress old job to make it your job

Hold on

I didn’t take diddly squat. I didn’t make up the senate, F1 did
If you have a problem, take it up with him. Also, senate has representatives from different streams, unlike congress

He said this one is different from his