Here are 4 threats in international market entry

Inferior planning
Lack of knowledge about the US market.

Inadequate marketing strategy
Market niche not found.
Lack of proper marketing campaigns.
Insufficient support for channel partners and resellers.

Lack of expert advice
Only 1 type of advice.
Working with the wrong consultants.
Lack of experienced business professionals on the US side.
Absence of negotiating assistance in the USA.

Poor sales strategy
Sales not properly implemented or managed.
Distributors not selling correctly, or enough.