How can National Events influence the Relationship between the President and Congress?

-In times of National Emergency, Congress will allow, and act with Deference (Give Presidents Power) to allow the President to be more Free and Act Strongly -The 'Blank Cheque' that Bush got is an Example, 48 Hours after 9/11 -During Covid, Biden declared that COVID-19 was a National Emergency. This allowed them to work closely with Congress, which was more Relaxed, to pass Emergency Legislation and Relief Packages.