[Jennifer Rubin writes in the Washington Post](https://www.washingtonpost.com/opinions/2019/01/28/trumps-senate-firewall-is-cracking/) that:

> 
> [the US President's] declaration of an emergency can be overridden by a simple majority of both houses
> 
> 
> 

Is it true that a presidential declaration of emergency in the US can be overridden by simple majorities of both houses, i.e. the US House of Representatives and the US Senate?