Found:

clause union

SYNTAX: process which reduces a clause containing an embedded clause to one simplex clause by eliminating the clause structure of the embedded clause. This (as yet undefined) process is supposedly triggered by auxiliary-like verbs (e.g. certain modals, causatives and perception verbs) in Germanic and Romance languages. See Restructuring, Verb Raising.

LIT.	Evers, A. (1975) Rizzi, L. (1982)