Not mistaken but
Unfortunately, while
Congress can pass laws to override executive orders, those laws are subject to presidential veto. And even if the Republican-controlled House and Senate somehow decided to defy their party's own president, it's just not all that difficult to imagine Trump exercising his veto power.
There is another way, though. The Supreme Court can declare an executive order to be unconstitutional, which has a rather strong record of precedents. Recent history, for instance, saw the
Supreme Court block Obama's executive order to delay deportations of certain undocumented immigrants. Reaching further back, the Supreme Court actually struck down
President Lincoln's suspension of habeas corpus, an executive order the president issued during the Civil War. His government ignored the Supreme Court sanction.
Google
more rocky than the moon landscape to get over
Do you think Congress or the Supreme Court want such a bun fight?