Defectors are going to be growing with every bipartisan issue
In politics, a defector
is a person who gives up allegiance to one state in exchange for allegiance to another, in a way which is considered illegitimate
by the first state. Are you implying that there are separate governing bodies in our Federal government? That there are people who consider themselves allied or duty bound to some entity other that the United States in our government?
[A]nd a veto will be challenged at some point, perhaps the next bipartisan bill which is the rebuke of legislative war powers authority.
Presidential vetoes are not 'challenged'. They are overridden. The only way Congress can override a Presidential veto is to pass the legislation for a second time with a 2/3 majority in each chamber. At that point, the President is 'overridden' and the legislation becomes law over his objections.
Congress wants it's control back and the senate isn't happy about Trump policies in Yemen and with the Saudi's, among other unfavorable foreign war policy issues.
Sadly, for you anyway, Congress does not set foreign policy, the President does. That's part of his function as President. If you had ever read the Constitution all this is based on, you would know this. So how does Congress regain control over something it never controlled in the first place?
When the first veto he makes is overturned he is a dead duck because legitimate impeachment grounds will result in the senate having 2/3rds.
That makes absolutely zero sense. What does overriding a Presidential veto have to do with grounds for impeachment? Do you think that the President disagreeing with an act of Congress and being overridden is somehow an equivalent? Did you 'take your meds' today?
Congress wants it's control back that had been given up by the GOP, and the senate is going to be forced to follow suit, the optics look too bad if they don't exercise their control over the executive branch.
Again, there's that pesky Constitution getting in the way of Congress ordering the executive around. Just think, if we didn't have all these so-called 'patriots' throwing these old, worn-out 250 year old ideas around, we could have a modern government with modern problems instead of the stability we have enjoyed since inception. Who do they think they are, telling us what is legal and what isn't? How dare they?
What you need to do is first and foremost, read this, and pay special attention to Article II:https://www.archives.gov/founding-docs/constitution-transcript
Okay, did you read it? Good, now go back and read it again, and keep reading it until you can see why the President is not beholden to a bunch of scallywags sitting in the chambers of Congress. Just keep going over it, you'll 'get it' eventually.
Now, is there anything else I can help you with today?