Curious. Did any country offer to send help to Texas other than Mexico?
The proximity of Mexico makes it a logical option for logistical support, where needed (that's what good neighbors do, they help out). That they chose to defy the abuse by the Trump administration by offering help shows a lot of class (and they are still not going to pay for a wall).
My country (the Netherlands) typically helps
developing countries that lack the funds or expertise to solve their own issues. Otherwise, we tend to not interfere with internal affairs unless asked to, and there are obvious limits to what a country of some 17 million people can do for others.
Besides, having to pony up the money to compensate for the USA's withdrawal from the Paris Climat agreements, and increasing our Defense expenditure towards the 2% of GDP goals, is already taxing our financial abilities to support the USA enough.
On the other hand, 'we' are willing to sell our expertise in Water Management to countries that can afford to pay for it (and offer it at a reduced/subsidized (as development aid) cost to developing nations). We've been involved in the post-Katrina efforts in Louisiana, and the post-Sandy efforts in New York, and are working on a slew of other projects across the USA.
Here's a list of commercial project locations, e.g. by just one Dutch company, called Arcadis:
https://www.arcadis.com/en/united-states/where-we-workThat company has apparently already been (and still is) doing some work on (amongst others) protecting the US coasts against rising sea levels but is often not being paid for protection against increasing precipitation and melting snow/ice water coming from inland. The specific Houston problem is one of neglect and perverse building ethics, and the effects will only get worse and more costly due to Global Warming (with warmer air and water providing more water for precipitation).
Cheers,
Bart
