The Senate again rejected a bill today that aimed to "prevent Trump from directly ordering an attack on Iran,"

The bill was vetoed, meaning that Trump can bypass Congress and sign orders directly if he wants to further strike Iran.
Of course, this veto does not mean that Trump will definitely attack Iran 100%, but it shows that the anti-war sentiment within the United States is already very strong.
Although the Senate has not effectively constrained Trump, judging from the vote ratio of 52 to 47, there are many opponents, and this is only a narrow lead with just 2 votes, even under the dominance of the Republican Party in the Senate.
The battle over war powers in the U.S. Congress has reached a "heated" stage, from Trump's sudden attack on Venezuela to the sudden initiation of war against Iran, multiple anti-war bills have appeared in Congress.
Although they were ultimately vetoed, bills to constrain the power to wage war are frequently proposed, and passing them indicates that Trump faces significant domestic political pressure.
This also shows that once Trump loses the advantage in the midterm elections, subsequent governance will likely be heavily constrained by Congress, and even impeachment is a high-probability scenario.
So far, Trump has not given up his desire for the midterm elections, so this internal constraint within the U.S. is also a factor that prevents Trump from daring to attack Iran casually again.
As mentioned earlier, this Middle East game is not only limited to the parties involved in the war but also involves other regions, and even domestic political struggles within the United States.