The Earth-38 Constitution.

Well, this is a show that implied that an alien who is posing as the president had the authority to create an executive order to make other aliens citizens simply for revealing themselves, as if Congress needed to have no say in such a process.

But if the adoption was fraudulent, the whole underpinning of her citizenship falls apart.

There's also the question of how Kara qualified to vote, which might mean she admitted to voter fraud.

Nice of the episode to gloss over the fact that Supergirl utterly failed to save Air Force One and everyone on board it, save for Marsden, who only survived because she's an alien, which Supergirl wouldn't have known. How many cabinet members, top aides and press correspondents were on that plane who are now all dead…

So, as the "president" is barking orders at Alex to fire the cannon, her obvious response could have been to point out that as an alien born on another planet, Marsden is not legally president and thus has no actual authority to give any military orders, but I digress.

Given how fast and loose this show plays with its plot points, there are several ways to save her. The Time remnant trick would at least have the virtue of using Savitar's origin story against him.

Time Remant Wally replaces Jay in the Speed Force prison

Then, Barry creates a time remnant version of Snart who sacrifices himself and then original Snart is back on the show.

They could just grab an alternate-Earth Snart to keep around.

Step 1: Joe, Wally and Iris go to Earth 2 without Barry knowing about it
Step 2: Wally creates a time remnant of himself and Iris. Original Wally and Iris go to Earth 3.
Step 3: Savitar beats up Wally-2 and kills Iris-2, thinking he's won.
Step 4:
Step 5: Profit

Yeah, I think Gale was getting his meth to 96% pure and he was obsessed with knowing how Walt got it to above 99%, and Gus, who didn't want to take a risk with Walter's lack of experience and professionalism, decided to placate him by bringing in Walt, thus beginning the end of his empire.

Mike makes passing references to his daughter-in-law on Breaking Bad, but she wasn't a necessary character on that show. Mostly he gives gifts to his granddaughter and says "don't tell your mother."

From the obvious callback department: Selina's team craps over American University at the beginning of the episode, and by the end Jane is insulting the younger hotter anchor by claiming she went there.

"Another great Gary moment: His impressed, 'Respect' to Dan at hearing the rumor that he’s sleeping with Jane McCabe."

yeah, he remembers nothing except racism and dentists and urban legends about stealing kidneys. And English

I considered that as well, but the workaround to that is that Savitar needs Barry to lose Iris, so if he doesn't kill her at the moment Barry saw then he'd just try to find her at some other point in time to kill her, under the presumption that if she goes into hiding, that she'd come back. And if she just stays in…

Future Barry's cause and effect speech was basically the writers saying there are no rules.

Yeah, but then there was no reason for Savitar to lose his memories

What a sec. If the ripple effect takes away Wally's powers because future Savitar forgets to create them, doesn't that mean Wally would never have been trapped in the speed force, so Jay would never have been trapped there to replace him. Ugh, I hate temporal mechanics. That whole speech from future Barry talking…